CVE-2023-28320
MEDIUM severity · CVSS 5.9 · Uncontrolled resource consumption
5.9CVSS MEDIUM
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityHigh
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)3%
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: https://hackerone.com/reports/1929597 ↗
Additional information
- NVD record
- https://hackerone.com/reports/1929597Patch
- http://seclists.org/fulldisclosure/2023/Jul/47Advisory
- http://seclists.org/fulldisclosure/2023/Jul/48Advisory
- http://seclists.org/fulldisclosure/2023/Jul/52Advisory
- https://security.gentoo.org/glsa/202310-12Advisory
- https://security.netapp.com/advisory/ntap-20230609-0009/Advisory
- https://support.apple.com/kb/HT213843Advisory
- https://support.apple.com/kb/HT213844Advisory