CVE-2021-45940 — MEDIUM (6.5)

Vulnerability Description

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).

CVSS Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Libbpf Project	Libbpf	0.6.0

Related Weaknesses (CWE)

CWE-787

References

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=40868ExploitIssue TrackingThird Party Advisory
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libbpf/OSV-2021-1562.yaExploitThird Party Advisory
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=40868ExploitIssue TrackingThird Party Advisory
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libbpf/OSV-2021-1562.yaExploitThird Party Advisory

FAQ

What is CVE-2021-45940?

CVE-2021-45940 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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).

How severe is CVE-2021-45940?

CVE-2021-45940 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-45940?

Check the references section above for vendor advisories and patch information. Affected products include: Libbpf Project Libbpf.