Medium [CVE-2023-32611] G_variant_byteswap can take a long time with some non-normal inputs
This medium-severity Red Hat Linux advisory covers CVE-2023-32611 affecting Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
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Summary
A flaw was found in GLib. GVariant deserialization is vulnerable to a slowdown issue where a crafted GVariant can cause excessive processing, leading to denial of service.
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. Red Hat severity: Low — CVSS 6.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H).
Weakness: CWE-502. Affected Red Hat products: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8.
Will not fix / out of support: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Red Hat fixing advisory: RHSA-2023:6631, RHSA-2024:2528.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 9 hours ago·verify at source
- glib2-0:2.68.4-11.el9
- mingw-glib2-0:2.78.0-1.el9
- RHSA-2023:6631
- RHSA-2024:2528
Official advisory · high-confidence parse· fetched 9 hours ago·verify at source
Mitigation
Upgrade to a fixed release: glib2-0:2.68.4-11.el9, mingw-glib2-0:2.78.0-1.el9, RHSA-2023:6631, RHSA-2024:2528. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 9 hours ago·verify at source
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