Improper Synchronization The advisory has been revoked - it doesn't affect any version of package libcurl (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-RHEL7-LIBCURL-5561471
- published17 May 2023
- disclosed17 May 2023
Introduced: 17 May 2023
CVE-2023-28320 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:7.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libcurl package and not the libcurl package as distributed by RHEL.
A denial of service vulnerability exists in curl <v8.1.0 in the way libcurl provides several different backends for resolving host names, selected at build time. If it is built to use the synchronous resolver, it allows name resolves to time-out slow operations using alarm() and siglongjmp(). When doing this, libcurl used a global buffer that was not mutex protected and a multi-threaded application might therefore crash or otherwise misbehave.
References
- https://access.redhat.com/security/cve/CVE-2023-28320
- http://seclists.org/fulldisclosure/2023/Jul/47
- http://seclists.org/fulldisclosure/2023/Jul/48
- http://seclists.org/fulldisclosure/2023/Jul/52
- https://hackerone.com/reports/1929597
- https://security.gentoo.org/glsa/202310-12
- https://security.netapp.com/advisory/ntap-20230609-0009/
- https://support.apple.com/kb/HT213843
- https://support.apple.com/kb/HT213844
- https://support.apple.com/kb/HT213845