CVE-2023-49062 Information disclosure in Katran
Katran fails to initialize IPv4 header fields, allowing attackers to read uninitialized kernel memory via crafted packets.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-49062?
CVE-2023-49062 is a high-severity vulnerability in Facebook Katran, published on 28 Nov 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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
Weakness: CWE-665
Which versions are affected by CVE-2023-49062?
It affects 1 product.
Products include Facebook Katran.
How do I fix CVE-2023-49062?
No fix has been published for CVE-2023-49062 yet. Limit exposure of the affected software until one is available.
Is CVE-2023-49062 being exploited?
There is no known exploitation of CVE-2023-49062 in the wild and no public exploit code.
Sources
Also known as GHSA-wjqw-hrp5-6whj.