Buffer overflow in Tianocore Edk2
CVE-2023-45234
EDK2's Network Package is susceptible to a buffer overflow vulnerability when processing DNS Servers option from a DHCPv6 Advertise message. This vulnerability can be exploited by an attacker to gain unauthorized access and potentially lead to a loss of Confidentiality, Integrity and/or Availability.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H.
EPSS exploit prediction
EPSS: 0.012 (67.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 67.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
- Tianocore Edk2 — versions edk2-stable202308
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/tianocore/edk2/security/advisories/GHSA-hc6x-cw6p-gj7h (vendor-advisory, Vendor Advisory)
- www.openwall.com/lists/oss-security/2024/01/16/2 (Mailing List)
- packetstormsecurity.com/files/176574/PixieFail-Proof-Of-Concepts.html (VDB Entry, Third Party Advisory)
- security.netapp.com/advisory/ntap-20240307-0011/
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/…
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2023-45234?
- CVE-2023-45234 is a high-severity vulnerability in Tianocore Edk2, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.3/10. Published 2024-01-16.
- How severe is CVE-2023-45234?
- High severity. CVSS v3 base score is 8.3 out of 10.
- Is CVE-2023-45234 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.