CVE-2023-49062

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

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.18%
Vendor Advisory facebook.com
Affected: Facebook Katran
Published at:
Updated at:

References

Link Tags
https://www.facebook.com/security/advisories/cve-2023-49062 vendor advisory
https://github.com/facebookincubator/katran/commit/6a03106ac1eab39d0303662963589ecb2374c97f patch

Frequently Asked Questions

What is the severity of CVE-2023-49062?
CVE-2023-49062 has been scored as a high severity vulnerability.
How to fix CVE-2023-49062?
To fix CVE-2023-49062, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-49062 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-49062 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-49062?
CVE-2023-49062 affects Facebook Katran.
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