GNU C Library 2.38 Call Graph Monitor gmon.c __monstartup buffer overflow ⚔ [Disputed]

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A vulnerability was found in GNU C Library 2.38 (Software Library). It has been declared as problematic. This vulnerability affects the function __monstartup of the file gmon.c of the component Call Graph Monitor. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

** DISPUTED ** 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.

The weakness was released 02/06/2023 by Leo Yuriev as Bug 29444 as confirmed bug report. The advisory is available at sourceware.org. This vulnerability was named CVE-2023-0687. Local access is required to approach this attack. Technical details are known, but there is no available exploit.

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.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at patchwork.sourceware.org.

Entries connected to this vulnerability are available at VDB-240259, VDB-241210, VDB-252436 and VDB-252437.

Productinfo

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Vendor

Name

Version

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.2

VulDB Base Score: 4.5
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 4.6
CNA Vector (VulDB): 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

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Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: patchwork.sourceware.org

Timelineinfo

02/06/2023 🔍
02/06/2023 +0 days 🔍
02/06/2023 +0 days 🔍
10/05/2023 +241 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: Bug 29444
Researcher: Leo Yuriev
Status: Confirmed
Disputed: 🔍

CVE: CVE-2023-0687 (🔍)
See also: 🔍

Entryinfo

Created: 02/06/2023 08:01 PM
Updated: 10/05/2023 01:42 PM
Changes: 02/06/2023 08:01 PM (43), 02/06/2023 08:02 PM (2), 02/17/2023 07:27 PM (1), 02/17/2023 07:34 PM (12), 03/05/2023 01:03 PM (2), 03/05/2023 01:10 PM (28), 03/05/2023 01:16 PM (1), 10/05/2023 01:42 PM (2)
Complete: 🔍
Submitter: erthink
Committer: siddhesh
Cache ID: 100:92B:40

Submitinfo

Accepted

  • Submit #84970: GNU C Library (glibc) gmon allocated buffer overflow (by erthink)

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