Vulnerability Name:

CVE-2021-27291 (CCN-198308)

Assigned:2021-01-11
Published:2021-01-11
Updated:2022-05-23
Summary:In pygments 1.1+, fixed in 2.7.4, the lexers used to parse programming languages rely heavily on regular expressions. Some of the regular expressions have exponential or cubic worst-case complexity and are vulnerable to ReDoS. By crafting malicious input, an attacker can cause a denial of service.
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:R)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
4.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)
3.7 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:P/RL:O/RC:R)
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): None
Integrity (I): None
Availibility (A): Low
7.5 High (REDHAT CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (REDHAT Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:R)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
4.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-Other
CWE-400
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2021-27291

Source: XF
Type: UNKNOWN
pygments-cve202127291-dos(198308)

Source: CCN
Type: GitHub Web site
Regular Expression Denial of Service (REDoS) in pygments

Source: MISC
Type: Exploit, Third Party Advisory
https://gist.github.com/b-c-ds/b1a2cc0c68a35c57188575eb496de5ce

Source: CCN
Type: pygments GIT Repository
pygments

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/pygments/pygments/commit/2e7e8c4a7b318f4032493773732754e418279a14

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20210319 [SECURITY] [DLA 2600-1] pygments security update

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20210505 [SECURITY] [DLA 2648-1] mediawiki security update

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20210506 [SECURITY] [DLA 2648-2] mediawiki regression update

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2021-166dfc62b2

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2021-3f975f68c8

Source: DEBIAN
Type: Third Party Advisory
DSA-4878

Source: DEBIAN
Type: Third Party Advisory
DSA-4889

Source: CCN
Type: IBM Security Bulletin 6551876 (Cloud Pak for Security)
Cloud Pak for Security uses packages that are vulnerable to multiple CVEs

Source: CCN
Type: IBM Security Bulletin 6856409 (Cloud Pak for Security)
IBM Cloud Pak for Security includes components with multiple known vulnerabilities

Vulnerable Configuration:Configuration 1:
  • cpe:/a:pygments:pygments:*:*:*:*:*:*:*:* (Version >= 1.1 and < 2.7.4)

    • Configuration 2:
  • cpe:/o:debian:debian_linux:9.0:*:*:*:*:*:*:*
  • OR cpe:/o:debian:debian_linux:10.0:*:*:*:*:*:*:*

    • Configuration 3:
  • cpe:/o:fedoraproject:fedora:32:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:33:*:*:*:*:*:*:*

    • Configuration RedHat 1:
  • cpe:/a:redhat:enterprise_linux:8:*:*:*:*:*:*:*

    • Configuration RedHat 2:
  • cpe:/a:redhat:enterprise_linux:8::highavailability:*:*:*:*:*

    • Configuration RedHat 3:
  • cpe:/a:redhat:enterprise_linux:8::resilientstorage:*:*:*:*:*

    • Configuration RedHat 4:
  • cpe:/a:redhat:enterprise_linux:8::appstream:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:ibm:cloud_pak_for_security:1.7.2.0:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:cloud_pak_for_security:1.10.0.0:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:cloud_pak_for_security:1.10.6.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:7452
    P
    		blas-devel-3.9.0-150000.4.13.2 on GA media (Moderate)
    2023-06-12
    oval:org.opensuse.security:def:7496
    P
    		flac-devel-1.3.2-150000.3.11.1 on GA media (Moderate)
    2023-06-12
    oval:org.opensuse.security:def:7766
    P
    		python3-Pygments-2.6.1-4.3.1 on GA media (Moderate)
    2023-06-12
    oval:org.opensuse.security:def:3533
    P
    		java-1_7_1-ibm-1.7.1_sr4.50-38.41.1 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:3716
    P
    		logrotate-3.11.0-2.14.1 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:3165
    P
    		libdjvulibre21-3.5.25.3-5.3.1 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:94645
    P
    		libipa_hbac-devel-2.5.2-150400.2.9 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:94795
    P
    		python3-Pygments-2.6.1-4.3.1 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:99767
    P
    		 (Important)
    2022-03-24
    oval:org.opensuse.security:def:100078
    P
    		 (Important)
    2022-02-18
    oval:org.opensuse.security:def:99174
    P
    		 (Important)
    2021-12-22
    oval:org.opensuse.security:def:111145
    P
    		Security update for python-Pygments (Important)
    2021-12-03
    oval:org.opensuse.security:def:8868
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:92817
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:105864
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:69958
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:64622
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:93273
    P
    		 (Important)
    2021-12-01
    oval:org.opensuse.security:def:9818
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:99163
    P
    		 (Important)
    2021-12-01
    oval:org.opensuse.security:def:106744
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:92224
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:111805
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:68585
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:118341
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:73927
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:815
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:9063
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:106059
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:70318
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:64805
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:93989
    P
    		 (Important)
    2021-12-01
    oval:org.opensuse.security:def:10178
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:100021
    P
    		 (Important)
    2021-12-01
    oval:org.opensuse.security:def:99369
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:108024
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:92419
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:111806
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:69564
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:76401
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:1495
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:9424
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:101358
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:95877
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:106258
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:70509
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:67333
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:10369
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:101546
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:8677
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:99568
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:109256
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:92618
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:105669
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:69759
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:9619
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:102590
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:6244
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:98979
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:106457
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:92029
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:68541
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:117538
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:73744
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:102075
    P
    		Security update for python-Pygments (Important)
    2021-12-01
    oval:org.opensuse.security:def:20830
    P
    		Security update for python-Pygments (Important)
    2021-11-29
    oval:org.opensuse.security:def:49301
    P
    		Security update for python-Pygments (Important)
    2021-11-29
    oval:com.redhat.rhsa:def:20214139
    P
    		RHSA-2021:4139: resource-agents security, bug fix, and enhancement update (Moderate)
    2021-11-09
    oval:com.redhat.rhsa:def:20214150
    P
    		RHSA-2021:4150: python36:3.6 security and bug fix update (Moderate)
    2021-11-09
    oval:com.redhat.rhsa:def:20214151
    P
    		RHSA-2021:4151: python27:2.7 security update (Moderate)
    2021-11-09
    BACK
    pygments pygments *
    debian debian linux 9.0
    debian debian linux 10.0
    fedoraproject fedora 32
    fedoraproject fedora 33
    ibm cloud pak for security 1.7.2.0
    ibm cloud pak for security 1.10.0.0
    ibm cloud pak for security 1.10.6.0