CVE-2023-32636: A flaw was found in glib, where the gvariant deserialization code is vulnerable to a denial of service introduced by additional input validation added to resolve CVE-2023-29499

Description

A flaw was found in glib, where the gvariant deserialization code is vulnerable to a denial of service introduced by additional input validation added to resolve CVE-2023-29499. The offset table validation may be very slow. This bug does not affect any released version of glib but does affect glib distributors who followed the guidance of glib developers to backport the initial fix for CVE-2023-29499.

CVSS vector

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

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

None

Confidentiality

None

Integrity

None

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)0.8% · higher than 56% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

GL

glib · glib

2.75.1 · source: vendor, NVD

SS

SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · Siemens

V3.1.0 before V3.1.5; V3.1.0 before V3.1.5 · source: CISA

SS

SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · Siemens

V3.1.0 before V3.1.5; V3.1.0 before V3.1.5 · source: CISA

SS

SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · Siemens

V3.1.0 before V3.1.5 · source: CISA