Vulnerability Name:

CVE-2021-45931 (CCN-216495)

Assigned:2021-08-21
Published:2021-08-21
Updated:2022-10-28
Summary:HarfBuzz 2.9.0 has an out-of-bounds write in hb_bit_set_invertible_t::set (called from hb_sparseset_t<hb_bit_set_invertible_t>::set and hb_set_copy).
CVSS v3 Severity:6.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
5.7 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/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): None
Integrity (I): None
Availibility (A): High
5.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
4.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/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): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
4.6 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-787
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2021-45931

Source: CCN
Type: Google Security Research Issue 37425
harfbuzz:hb-subset-fuzzer: Crash in hb_bit_set_invertible_t::set

Source: MISC
Type: Exploit, Issue Tracking, Third Party Advisory
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=37425

Source: XF
Type: UNKNOWN
harfbuzz-cve202145931-dos(216495)

Source: MISC
Type: Exploit, Third Party Advisory
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/harfbuzz/OSV-2021-1159.yaml

Source: CCN
Type: harfbuzz GIT Repository
[set] Make all operators null-safe again

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/harfbuzz/harfbuzz/commit/d3e09bf4654fe5478b6dbf2b26ebab6271317d81

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2022-b3b5ac4053

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2022-a03b13b4d2

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2022-4bfa39df02

Source: GENTOO
Type: Third Party Advisory
GLSA-202209-11

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2021-45931

Vulnerable Configuration:Configuration 1:
  • cpe:/a:harfbuzz_project:harfbuzz:2.9.0:*:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/o:fedoraproject:fedora:34:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:35:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:harfbuzz_project:harfbuzz:2.9.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    harfbuzz_project harfbuzz 2.9.0
    fedoraproject fedora 34
    fedoraproject fedora 35
    harfbuzz_project harfbuzz 2.9.0