Vulnerability Name:

CVE-2021-36979 (CCN-205949)

Assigned:2021-02-06
Published:2021-02-06
Updated:2021-12-03
Summary:Unicorn Engine 1.0.2 has an out-of-bounds write in tb_flush_armeb (called from cpu_arm_exec_armeb and tcg_cpu_exec_armeb).
CVSS v3 Severity:5.5 Medium (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 (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
3.3 Low (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)
2.9 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/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): Low
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
1.7 Low (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-787
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2021-36979

Source: CCN
Type: Google Security Research Issue 30391
unicorn:fuzz_emu_arm_armbe: Crash in tb_flush_armeb

Source: MISC
Type: Issue Tracking, Patch, Third Party Advisory
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=30391

Source: XF
Type: UNKNOWN
unicorn-cve202136979-dos(205949)

Source: MISC
Type: Third Party Advisory
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/unicorn/OSV-2020-2305.yaml

Source: CCN
Type: Unicorn GIT Repository
Add arm ite blocks samples from #853 (#1381)

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/unicorn-engine/unicorn/commit/bf1713d9e011b55ca1f502a6779fc4722b4bb077

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2021-53dd27bb86

Vulnerable Configuration:Configuration 1:
  • cpe:/a:unicorn-engine:unicorn_engine:1.0.2:*:*:*:*:*:*:*

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

    • Configuration CCN 1:
  • cpe:/a:unicorn-engine:unicorn_engine:1.0.2:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    unicorn-engine unicorn engine 1.0.2
    fedoraproject fedora 35
    unicorn-engine unicorn engine 1.0.2