CVE-2023-29499
glib: GVariant offset table entry size is not checked in is_normal()
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · December 14, 2022
Updated · June 30, 2026
Description
A flaw was found in GLib. GVariant deserialization fails to validate that the input conforms to the expected format, leading to denial of service.
Statement
This vulnerability allows for a denial of service attack to be performed against applications that process untrusted GVariant input, compromising application availability by consuming excessive processing time or utilizing a large quantity of memory. The most likely threat is from a local user, which may be possible depending on the configuration of the service and the format of parameters that it expects. While a remote attack is possible if the application is configured to read GVariants over a network connection, this is not the default configuration which makes the likelihood low. Because the most widely available attack vector is local and the consequences are limited to denial of service, Red Hat Product Security rates the impact as Low.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 6.2CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-502 · Deserialization of Untrusted Data