Vulnerability Name:

CVE-2020-26974 (CCN-193222)

Assigned:2020-12-15
Published:2020-12-15
Updated:2021-01-12
Summary:When flex-basis was used on a table wrapper, a StyleGenericFlexBasis object could have been incorrectly cast to the wrong type. This resulted in a heap user-after-free, memory corruption, and a potentially exploitable crash. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6.
CVSS v3 Severity:8.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
7.7 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
8.8 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
7.7 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
8.8 High (REDHAT CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
7.7 High (REDHAT Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:6.8 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
9.0 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-787
CWE-416
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2020-26974

Source: MISC
Type: Permissions Required
https://bugzilla.mozilla.org/show_bug.cgi?id=1681022

Source: XF
Type: UNKNOWN
firefox-cve202026974-code-exec(193222)

Source: CCN
Type: IBM Security Bulletin 6447455 (Application Performance Management)
Multiple vulnerabilities of Mozilla Firefox (less than Firefox 78.9.0 ESR + CVE-2020-26974) have affected Synthetic Playback Agent 8.1.4.0-8.1.4 IF13 + ICAM2019.3.0 - 2020.2.0

Source: CCN
Type: IBM Security Bulletin 6454029 (Cloud Pak for Multicloud Management)
Multiple vulnerabilities in Mozilla Firefox affect IBM Cloud Pak for Multicloud Management Monitoring

Source: CCN
Type: Mozilla Foundation Security Advisory 2020-54
Security Vulnerabilities fixed in Firefox 84

Source: CCN
Type: Mozilla Foundation Security Advisory 2020-55
Security Vulnerabilities fixed in Firefox ESR 78.6

Source: CCN
Type: Mozilla Foundation Security Advisory 2020-56
Security Vulnerabilities fixed in Thunderbird 78.6

Source: MISC
Type: Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-54/

Source: MISC
Type: Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-55/

Source: MISC
Type: Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-56/

Vulnerable Configuration:Configuration 1:
  • cpe:/a:mozilla:firefox:*:*:*:*:*:*:*:* (Version < 84.0)
  • OR cpe:/a:mozilla:firefox_esr:*:*:*:*:*:*:*:* (Version < 78.6.0)
  • OR cpe:/a:mozilla:thunderbird:*:*:*:*:*:*:*:* (Version < 78.6.0)

    • Configuration RedHat 1:
  • cpe:/o:redhat:enterprise_linux:7:*:*:*:*:*:*:*

    • Configuration RedHat 2:
  • cpe:/o:redhat:enterprise_linux:7::client:*:*:*:*:*

    • Configuration RedHat 3:
  • cpe:/o:redhat:enterprise_linux:7::server:*:*:*:*:*

    • Configuration RedHat 4:
  • cpe:/o:redhat:enterprise_linux:7::workstation:*:*:*:*:*

    • Configuration RedHat 5:
  • cpe:/a:redhat:enterprise_linux:8:*:*:*:*:*:*:*

    • Configuration RedHat 6:
  • cpe:/a:redhat:enterprise_linux:8::appstream:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:mozilla:thunderbird:78.5:*:*:*:*:*:*:*
  • OR cpe:/a:mozilla:firefox_esr:78.5:*:*:*:*:*:*:*
  • AND
  • cpe:/a:ibm:application_performance_management:8.1.4:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:7868
    P
    		MozillaFirefox-102.11.0-150200.152.87.1 on GA media (Moderate)
    2023-06-12
    oval:org.opensuse.security:def:645
    P
    		Security update for php7 (Moderate) (in QA)
    2022-10-04
    oval:org.opensuse.security:def:3546
    P
    		libICE6-1.0.8-12.1 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:3252
    P
    		libsmi-0.4.8-18.55 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:95166
    P
    		yast2-rmt-1.3.2-3.3.1 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:94882
    P
    		MozillaFirefox-91.8.0-150200.152.26.1 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:95176
    P
    		MozillaThunderbird-91.8.0-150200.8.65.1 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:94758
    P
    		nfs-client-2.1.1-150100.10.24.1 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:5341
    P
    		Security update for the Linux Kernel (Critical)
    2022-02-10
    oval:org.opensuse.security:def:111899
    P
    		MozillaFirefox-92.0-1.2 on GA media (Moderate)
    2022-01-17
    oval:org.opensuse.security:def:111905
    P
    		MozillaThunderbird-91.1.1-1.1 on GA media (Moderate)
    2022-01-17
    oval:org.opensuse.security:def:1639
    P
    		Security update for squid (Moderate)
    2021-10-20
    oval:org.opensuse.security:def:105476
    P
    		MozillaFirefox-92.0-1.2 on GA media (Moderate)
    2021-10-01
    oval:org.opensuse.security:def:105478
    P
    		MozillaThunderbird-91.1.1-1.1 on GA media (Moderate)
    2021-10-01
    oval:org.opensuse.security:def:101879
    P
    		Security update for postgresql12 (Moderate)
    2021-09-29
    oval:org.opensuse.security:def:96781
    P
    		syslog-service-2.0-2.23 on GA media (Moderate)
    2021-09-21
    oval:org.opensuse.security:def:96769
    P
    		rsyslog-8.33.1-3.9.1 on GA media (Moderate)
    2021-09-21
    oval:org.opensuse.security:def:96770
    P
    		rzsz-0.12.21~rc-1.8 on GA media (Moderate)
    2021-09-21
    oval:org.opensuse.security:def:96771
    P
    		screen-4.6.2-3.14 on GA media (Moderate)
    2021-09-21
    oval:org.opensuse.security:def:72447
    P
    		MozillaFirefox-78.10.0-8.38.1 on GA media (Moderate)
    2021-08-09
    oval:org.opensuse.security:def:101134
    P
    		MozillaFirefox-78.10.0-8.38.1 on GA media (Moderate)
    2021-08-09
    oval:org.opensuse.security:def:62728
    P
    		MozillaFirefox-78.10.0-8.38.1 on GA media (Moderate)
    2021-08-09
    oval:org.opensuse.security:def:101471
    P
    		Security update for sqlite3 (Important)
    2021-07-14
    oval:org.opensuse.security:def:93411
    P
    		 (Important)
    2021-06-11
    oval:org.opensuse.security:def:110386
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-25
    oval:org.opensuse.security:def:96295
    P
    		Security update for MozillaThunderbird (Critical)
    2020-12-25
    oval:org.opensuse.security:def:119773
    P
    		Security update for MozillaThunderbird (Critical)
    2020-12-25
    oval:org.opensuse.security:def:70773
    P
    		Security update for MozillaThunderbird (Critical)
    2020-12-25
    oval:org.opensuse.security:def:109633
    P
    		Security update for MozillaThunderbird (Critical)
    2020-12-25
    oval:org.opensuse.security:def:10633
    P
    		Security update for MozillaThunderbird (Critical)
    2020-12-25
    oval:org.opensuse.security:def:110385
    P
    		Security update for MozillaThunderbird (Critical)
    2020-12-25
    oval:org.opensuse.security:def:102967
    P
    		Security update for MozillaThunderbird (Critical)
    2020-12-25
    oval:org.opensuse.security:def:110925
    P
    		Security update for MozillaThunderbird (Critical)
    2020-12-22
    oval:org.opensuse.security:def:110926
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-22
    oval:org.opensuse.security:def:38652
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:45582
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:84539
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:126679
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:66707
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:31098
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:59448
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:99902
    P
    		Security update for MozillaThunderbird (Critical)
    2020-12-21
    oval:org.opensuse.security:def:23108
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:54695
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:87299
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:108137
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:75775
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:82516
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:5618
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:91137
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:117651
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:33625
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:65141
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:28872
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:57391
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:89361
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:39942
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:51096
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:85562
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:74209
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:127076
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:4052
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:70728
    P
    		Security update for MozillaThunderbird (Critical)
    2020-12-21
    oval:org.opensuse.security:def:31568
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:59706
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:23495
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:55132
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:88088
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:108545
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:43082
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:83169
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:10588
    P
    		Security update for MozillaThunderbird (Critical)
    2020-12-21
    oval:org.opensuse.security:def:33883
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:65202
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:29309
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:57841
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:97561
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:41152
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:51483
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:86032
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:104251
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:74270
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:81031
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:4113
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:32018
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:60163
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:23874
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:55785
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:88397
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:44372
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:84084
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:125507
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:34340
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:66430
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:29962
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:58658
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:98102
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:21358
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:51862
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:86482
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:104792
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:75498
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:82079
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:90596
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:4967
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:32835
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:25980
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:56921
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:org.opensuse.security:def:89103
    P
    		Security update for MozillaFirefox (Critical)
    2020-12-21
    oval:com.redhat.rhsa:def:20205618
    P
    		RHSA-2020:5618: thunderbird security update (Important)
    2020-12-17
    oval:com.redhat.rhsa:def:20205624
    P
    		RHSA-2020:5624: thunderbird security update (Important)
    2020-12-17
    oval:com.redhat.rhsa:def:20205561
    P
    		RHSA-2020:5561: firefox security update (Important)
    2020-12-16
    oval:com.redhat.rhsa:def:20205562
    P
    		RHSA-2020:5562: firefox security update (Important)
    2020-12-16
    BACK
    mozilla firefox *
    mozilla firefox esr *
    mozilla thunderbird *
    mozilla thunderbird 78.5
    mozilla firefox esr 78.5
    ibm application performance management 8.1.4