Buffer overflow in Network Block Device Project
CVE-2022-26496
In nbd-server in nbd before 3.24, there is a stack-based buffer overflow. An attacker can cause a buffer overflow in the parsing of the name field by sending a crafted NBD_OPT_INFO or NBD_OPT_GO message with an large value as the length of the name.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.036 (89.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 89.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.036 · newest: 0.036 · change: 0.000
Affected products
- Network Block Device Project
- Debian Linux — versions 10.0, 11.0
- Fedoraproject Fedora — versions 34, 35, 36
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.debian.org/nbd/2022/01/msg00037.html (Exploit, Mailing List, Third Party Advisory)
- sourceforge.net/projects/nbd/files/nbd/ (Product, Third Party Advisory, Release Notes)
- lists.debian.org/nbd/2022/01/msg00036.html (Mailing List, Third Party Advisory)
- www.debian.org/security/2022/dsa-5100 (vendor-advisory, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- packetstormsecurity.com/files/172148/Shannon-Baseband-fmtp-SDP-Attribute-Memory…
- security.gentoo.org/glsa/202402-10 (vendor-advisory)
Frequently asked questions
- What is CVE-2022-26496?
- CVE-2022-26496 is a critical-severity vulnerability in Network Block Device Project, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2022-03-06.
- How severe is CVE-2022-26496?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2022-26496 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.