Medium severity5.9NVD Advisory· Published May 26, 2023· Updated Jun 17, 2026
CVE-2023-28320
CVE-2023-28320
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
36- osv-coords34 versionspkg:rpm/opensuse/curl&distro=openSUSE%20Leap%2015.4pkg:rpm/opensuse/curl&distro=openSUSE%20Leap%2015.5pkg:rpm/opensuse/curl&distro=openSUSE%20Leap%20Micro%205.3pkg:rpm/opensuse/curl&distro=openSUSE%20Tumbleweedpkg:rpm/suse/curl&distro=SUSE%20Enterprise%20Storage%206pkg:rpm/suse/curl&distro=SUSE%20Enterprise%20Storage%207pkg:rpm/suse/curl&distro=SUSE%20Enterprise%20Storage%207.1pkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSSpkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-ESPOSpkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSSpkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Micro%205.1pkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Micro%205.2pkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Micro%205.3pkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Micro%205.4pkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP4pkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2015%20SP3pkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-ESPOSpkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSSpkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSSpkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSSpkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2pkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP3pkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/curl&distro=SUSE%20Manager%20Proxy%204.2pkg:rpm/suse/curl&distro=SUSE%20Manager%20Server%204.2pkg:rpm/suse/curl&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/curl&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209
< 8.0.1-150400.5.23.1+ 33 more
- (no CPE)range: < 8.0.1-150400.5.23.1
- (no CPE)range: < 8.0.1-150400.5.23.1
- (no CPE)range: < 8.0.1-150400.5.23.1
- (no CPE)range: < 8.1.0-1.1
- (no CPE)range: < 7.60.0-150000.51.1
- (no CPE)range: < 7.66.0-150200.4.57.1
- (no CPE)range: < 7.66.0-150200.4.57.1
- (no CPE)range: < 7.60.0-150000.51.1
- (no CPE)range: < 7.66.0-150200.4.57.1
- (no CPE)range: < 7.66.0-150200.4.57.1
- (no CPE)range: < 7.66.0-150200.4.57.1
- (no CPE)range: < 7.66.0-150200.4.57.1
- (no CPE)range: < 7.66.0-150200.4.57.1
- (no CPE)range: < 8.0.1-150400.5.23.1
- (no CPE)range: < 8.0.1-150400.5.23.1
- (no CPE)range: < 8.0.1-150400.5.23.1
- (no CPE)range: < 7.66.0-150200.4.57.1
- (no CPE)range: < 7.37.0-37.98.1
- (no CPE)range: < 7.60.0-4.56.1
- (no CPE)range: < 7.60.0-4.56.1
- (no CPE)range: < 8.0.1-11.65.2
- (no CPE)range: < 7.60.0-150000.51.1
- (no CPE)range: < 7.66.0-150200.4.57.1
- (no CPE)range: < 7.66.0-150200.4.57.1
- (no CPE)range: < 7.60.0-4.56.1
- (no CPE)range: < 8.0.1-11.65.2
- (no CPE)range: < 7.60.0-150000.51.1
- (no CPE)range: < 7.66.0-150200.4.57.1
- (no CPE)range: < 7.66.0-150200.4.57.1
- (no CPE)range: < 8.0.1-11.65.2
- (no CPE)range: < 7.66.0-150200.4.57.1
- (no CPE)range: < 7.66.0-150200.4.57.1
- (no CPE)range: < 7.60.0-4.56.1
- (no CPE)range: < 7.60.0-4.56.1
Patches
Vulnerability mechanics
References
9- hackerone.com/reports/1929597nvdExploitPatchThird Party Advisory
- seclists.org/fulldisclosure/2023/Jul/47nvdMailing ListThird Party Advisory
- seclists.org/fulldisclosure/2023/Jul/48nvdMailing ListThird Party Advisory
- seclists.org/fulldisclosure/2023/Jul/52nvdMailing ListThird Party Advisory
- security.gentoo.org/glsa/202310-12nvdThird Party Advisory
- security.netapp.com/advisory/ntap-20230609-0009/nvdThird Party Advisory
- support.apple.com/kb/HT213843nvdThird Party Advisory
- support.apple.com/kb/HT213844nvdThird Party Advisory
- support.apple.com/kb/HT213845nvdThird Party Advisory
News mentions
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