HOMEVULNERABILITIESCVE-2023-49062
HIGH

CVE-2023-49062

CWE-665Published: November 28, 2023· Updated: Jun 17, 2026

7.5
CVSS v3.1

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

NVD Source

Technical Analysis

CVE-2023-49062 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Vendors & Products

facebook1 product(s)
katran
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/facebookincubator/katran/commit/6a03106ac1eab39d0303662963589ecb2374c97f
PATCHhttps://github.com/facebookincubator/katran/commit/6a03106ac1eab39d0303662963589ecb2374c97f
ADVISORYhttps://www.facebook.com/security/advisories/cve-2023-49062
ADVISORYhttps://www.facebook.com/security/advisories/cve-2023-49062

All References (4)

→
https://github.com/facebookincubator/katran/commit/6a03106ac1eab39d0303662963589ecb2374c97fPatch
→
https://www.facebook.com/security/advisories/cve-2023-49062Vendor Advisory
→
https://github.com/facebookincubator/katran/commit/6a03106ac1eab39d0303662963589ecb2374c97fPatch
→
https://www.facebook.com/security/advisories/cve-2023-49062Vendor Advisory

Quick Facts

CVE IDCVE-2023-49062
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-665
CISA KEVNo
Affected1 vendor(s)
PublishedNov 28, 2023

Related CVEs (CWE-665)

CVE-2023-20591
10.0
CVE-2022-0947
9.8
CVE-2018-11949
9.8
CVE-2019-10196
9.8
CVE-2019-14271
9.8
CVE-2017-13715
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-49062 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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