CVE-2023-49062

Published: Nov 28, 2023Modified: Jun 17, 2026

7.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploitability: 3.9 / Impact: 3.6

Source: NVD

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

Affected (1)

Products: Facebook: Katran

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Facebook Katran	Before 2023-11-15

Related CWEs

Improper Initialization

The product does not initialize or incorrectly initializes a resource, which might leave the resource in an unexpected state when it is accessed or used.

References (4)

https://github.com/facebookincubator/katran/commit/6a03106ac1eab39d0303662963589ecb2374c97f

Source: cve-assign@fb.com

Patch

https://www.facebook.com/security/advisories/cve-2023-49062

Source: cve-assign@fb.com

Vendor Advisory

https://github.com/facebookincubator/katran/commit/6a03106ac1eab39d0303662963589ecb2374c97f

Source: af854a3a-2127-422b-91ae-364da2661108

Patch

https://www.facebook.com/security/advisories/cve-2023-49062

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

Timeline

No history available yet.