Vulnerability Name:

CVE-2020-24994 (CCN-198726)

Assigned:2020-08-29
Published:2020-08-29
Updated:2022-07-22
Summary:Stack overflow in the parse_tag function in libass/ass_parse.c in libass before 0.15.0 allows remote attackers to cause a denial of service or remote code execution via a crafted file.
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
7.8 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
6.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/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): Local
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
6.8 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2020-24994

Source: XF
Type: UNKNOWN
libass-cve202024994-bo(198726)

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/libass/libass/commit/6835731c2fe4164a0c50bc91d12c43b2a2b4e

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/libass/libass/issues/422

Source: MISC
Type: Issue Tracking, Patch, Third Party Advisory
https://github.com/libass/libass/issues/422#issuecomment-806002919

Source: CCN
Type: libass GIT Repository
stack-overflow on ass_parse.c:77 mystrcmp #423

Source: MISC
Type: Third Party Advisory
https://github.com/libass/libass/issues/423

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2020-24994

Vulnerable Configuration:Configuration 1:
  • cpe:/a:libass_project:libass:*:*:*:*:*:*:*:* (Version < 0.15.0)

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:7920
    P
    		libass-devel-0.14.0-150000.3.11.1 on GA media (Moderate)
    2023-06-12
    oval:org.opensuse.security:def:3301
    P
    		memcached-1.4.39-4.6.1 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:94931
    P
    		libass-devel-0.14.0-3.9.1 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:94773
    P
    		perl-Archive-Zip-1.60-3.3.1 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:95242
    P
    		Security update for openvpn (Moderate)
    2022-06-03
    oval:org.opensuse.security:def:6014
    P
    		Security update for dnsmasq (Important)
    2022-04-21
    oval:org.opensuse.security:def:101955
    P
    		Security update for the Linux Kernel (Live Patch 3 for SLE 15 SP3) (Important)
    2022-04-14
    oval:org.opensuse.security:def:101486
    P
    		Security update for fetchmail (Moderate)
    2021-08-20
    oval:org.opensuse.security:def:111548
    P
    		Security update for libass (Moderate)
    2021-07-10
    oval:org.opensuse.security:def:111401
    P
    		Security update for libass (Moderate)
    2021-05-23
    oval:org.opensuse.security:def:101697
    P
    		Security update for libass (Moderate)
    2021-05-20
    oval:org.opensuse.security:def:65282
    P
    		Security update for libass (Moderate)
    2021-05-20
    oval:org.opensuse.security:def:5694
    P
    		Security update for libass (Moderate)
    2021-05-20
    oval:org.opensuse.security:def:96961
    P
    		Security update for libass (Moderate)
    2021-05-20
    oval:org.opensuse.security:def:75851
    P
    		Security update for libass (Moderate)
    2021-05-20
    oval:org.opensuse.security:def:108621
    P
    		Security update for libass (Moderate)
    2021-05-20
    oval:org.opensuse.security:def:66783
    P
    		Security update for libass (Moderate)
    2021-05-20
    oval:org.opensuse.security:def:76171
    P
    		Security update for libass (Moderate)
    2021-05-20
    oval:org.opensuse.security:def:4128
    P
    		Security update for libass (Moderate)
    2021-05-20
    oval:org.opensuse.security:def:67103
    P
    		Security update for libass (Moderate)
    2021-05-20
    oval:org.opensuse.security:def:74285
    P
    		Security update for libass (Moderate)
    2021-05-20
    oval:org.opensuse.security:def:65217
    P
    		Security update for libass (Moderate)
    2021-05-20
    oval:org.opensuse.security:def:4193
    P
    		Security update for libass (Moderate)
    2021-05-20
    oval:org.opensuse.security:def:117666
    P
    		Security update for libass (Moderate)
    2021-05-20
    oval:org.opensuse.security:def:74350
    P
    		Security update for libass (Moderate)
    2021-05-20
    oval:org.opensuse.security:def:108152
    P
    		Security update for libass (Moderate)
    2021-05-20
    BACK
    libass_project libass *