Use-after-free in uriparser - CVE-2021-46142
Published: January 27, 2022
Vulnerability identifier: #VU60086
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-46142
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: uriparser
Affected software:
uriparser
uriparser
Detailed vulnerability description
The vulnerability allows a remote attacker to crash the application.
The vulnerability exists due to a use-after-free error when parsing URI in uriNormalizeSyntax in uriparser. A remote attacker can trick the victim to open a specially crafted URI, trigger a use-after-free error and crash the application that us using the affected library.How to mitigate CVE-2021-46142
Install updates from vendor's website.
Sources
- https://github.com/uriparser/uriparser/issues/122
- https://github.com/uriparser/uriparser/pull/124
- https://blog.hartwork.org/posts/uriparser-096-with-security-fixes-released/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MO6T7WA27H7K3WI2AXUAGPWBGK4HM65D/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YGIJTDNEMU2V4H3JJBQVKBRHU5GBQKG2/
- https://www.debian.org/security/2022/dsa-5063