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CVE-2021-45940

Date: December 31, 2021

libbpf 0.6.0 and 0.6.1 has a heap-based buffer overflow (4 bytes) in __bpf_object__open (called from bpf_object__open_mem and bpf-object-fuzzer.c).

Language: C

Severity Score

6.5

Related Resources (7)

Url: https://nvd.nist.gov/vuln/detail/CVE-2021-45940

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2021-45940

Url: https://security-tracker.debian.org/tracker/CVE-2021-45940

Url: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=40868

Url: https://access.redhat.com/security/cve/CVE-2021-45940

Url: https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libbpf/OSV-2021-1562.yaml

Url: https://www.mend.io/vulnerability-database/CVE-2021-45940

Severity Score

6.5

Weakness Type (CWE)

Out-of-bounds Write

CWE-787

CVSS v3.1

Base Score:	6.5
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	REQUIRED
Scope (S):	UNCHANGED
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	HIGH

CVSS v2

Base Score:	4.3
Access Vector (AV):	NETWORK
Access Complexity (AC):	MEDIUM
Authentication (AU):	NONE
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	PARTIAL
Additional information:

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