Vulnerability in Facebook Katran
CVE-2023-49062
Katran could disclose non-initialized kernel memory as part of an IP header. The issue was present for IPv4 encapsulation and ICMP (v4) Too Big packet generation. After a bpf_xdp_adjust_head call, Katran code didn’t initialize the Identification field for the IPv4 header, resulting in writing content of kernel memory in that field of IP header. The issue affected all Katran versions prior to commit 6a03106ac1eab39d0303662963589ecb2374c97f
Vulnerability class: Dirty Pipe (CVE-2022-0847)
EPSS: 0.006 (46.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Facebook Katran — versions 0
Weakness classification (CWE)
References
- cve-assign@fb.com (x_refsource_CONFIRM, Vendor Advisory)
- cve-assign@fb.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2023-49062?
- CVE-2023-49062 is a high-severity vulnerability in Facebook Katran, classified under Improper Initialization. CVSS score: 7.5/10. Published 2023-11-28.
- How severe is CVE-2023-49062?
- High severity. CVSS v3 base score is 7.5 out of 10.