HOMEVULNERABILITIESCVE-2023-0687
CRITICAL

CVE-2023-0687

CWE-120Published: February 6, 2023· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

A vulnerability was found in GNU C Library 2.38. It has been declared as critical. This vulnerability affects the function __monstartup of the file gmon.c of the component Call Graph Monitor. The manipulation leads to buffer overflow. It is recommended to apply a patch to fix this issue. VDB-220246 is the identifier assigned to this vulnerability. NOTE: The real existence of this vulnerability is still doubted at the moment. The inputs that induce this vulnerability are basically addresses of the running application that is built with gmon enabled. It's basically trusted input or input that needs an actual security flaw to be compromised or controlled.

NVD Source

Technical Analysis

CVE-2023-0687 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), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

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

Affected Vendors & Products

gnu1 product(s)
glibc
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://patchwork.sourceware.org/project/glibc/patch/20230204114138.5436-1-leo%40yuriev.ru/
PATCHhttps://sourceware.org/bugzilla/show_bug.cgi?id=29444
PATCHhttps://patchwork.sourceware.org/project/glibc/patch/20230204114138.5436-1-leo%40yuriev.ru/
PATCHhttps://sourceware.org/bugzilla/show_bug.cgi?id=29444
ADVISORYhttps://vuldb.com/?ctiid.220246
ADVISORYhttps://vuldb.com/?id.220246
ADVISORYhttps://vuldb.com/?ctiid.220246
ADVISORYhttps://vuldb.com/?id.220246

All References (8)

→
https://patchwork.sourceware.org/project/glibc/patch/20230204114138.5436-1-leo%40yuriev.ru/Patch
→
https://sourceware.org/bugzilla/show_bug.cgi?id=29444Issue Tracking · Patch · Third Party Advisory
→
https://vuldb.com/?ctiid.220246Permissions Required · Third Party Advisory
→
https://vuldb.com/?id.220246Permissions Required · Third Party Advisory
→
https://patchwork.sourceware.org/project/glibc/patch/20230204114138.5436-1-leo%40yuriev.ru/Patch
→
https://sourceware.org/bugzilla/show_bug.cgi?id=29444Issue Tracking · Patch · Third Party Advisory
→
https://vuldb.com/?ctiid.220246Permissions Required · Third Party Advisory
→
https://vuldb.com/?id.220246Permissions Required · Third Party Advisory

Quick Facts

CVE IDCVE-2023-0687
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-120
CISA KEVNo
Affected1 vendor(s)
PublishedFeb 6, 2023

Related CVEs (CWE-120)

CVE-2008-3496
10.0
CVE-2001-0191
10.0
CVE-1999-0385
10.0
CVE-2023-4260
10.0
CVE-2025-9962
10.0
CVE-2022-20827
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-0687 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. CVE data is provided under the NVD usage policy.
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