CVE-2021-45940
MEDIUMCVSS 6.5/10EPSS 1.13%
Last modified
CVE-2021-45940 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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).. EPSS estimates a 1.13% chance of exploitation in the next 30 days.
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).
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Libbpf Project | Libbpf | 0.6.0 |
| Libbpf Project | Libbpf | 0.6.1 |
References
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=40868Exploit, Issue Tracking, Third Party Advisory
- https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libbpf/OSV-2021-1562.yamlExploit, Third Party Advisory
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=40868Exploit, Issue Tracking, Third Party Advisory
- https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libbpf/OSV-2021-1562.yamlExploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-45940?
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 a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.13% probability of exploitation in the next 30 days.
How do I fix CVE-2021-45940?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2021-45940?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST