High severity8.8NVD Advisory· Published Mar 30, 2023· Updated Jun 17, 2026
CVE-2023-27533
CVE-2023-27533
Description
A vulnerability in input validation exists in curl <8.0 during communication using the TELNET protocol may allow an attacker to pass on maliciously crafted user name and "telnet options" during server negotiation. The lack of proper input scrubbing allows an attacker to send content or perform option negotiation without the application's intent. This vulnerability could be exploited if an application allows user input, thereby enabling attackers to execute arbitrary code on the system.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
26- osv-coords25 versionspkg:rpm/almalinux/curlpkg:rpm/almalinux/curl-minimalpkg:rpm/almalinux/libcurlpkg:rpm/almalinux/libcurl-develpkg:rpm/almalinux/libcurl-minimalpkg:rpm/opensuse/curl&distro=openSUSE%20Leap%2015.4pkg: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%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-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%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%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%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%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/curl&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/curl&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209
< 7.76.1-26.el9+ 24 more
- (no CPE)range: < 7.76.1-26.el9
- (no CPE)range: < 7.76.1-26.el9
- (no CPE)range: < 7.76.1-26.el9
- (no CPE)range: < 7.76.1-26.el9
- (no CPE)range: < 7.76.1-26.el9
- (no CPE)range: < 7.79.1-150400.5.18.1
- (no CPE)range: < 7.79.1-150400.5.18.1
- (no CPE)range: < 8.0.1-1.1
- (no CPE)range: < 7.60.0-150000.51.1
- (no CPE)range: < 7.60.0-150000.51.1
- (no CPE)range: < 7.66.0-150200.4.52.1
- (no CPE)range: < 7.66.0-150200.4.52.1
- (no CPE)range: < 7.79.1-150400.5.18.1
- (no CPE)range: < 7.79.1-150400.5.18.1
- (no CPE)range: < 7.66.0-150200.4.52.1
- (no CPE)range: < 7.60.0-4.56.1
- (no CPE)range: < 7.60.0-4.56.1
- (no CPE)range: < 7.60.0-11.60.1
- (no CPE)range: < 7.60.0-150000.51.1
- (no CPE)range: < 7.60.0-4.56.1
- (no CPE)range: < 7.60.0-11.60.1
- (no CPE)range: < 7.60.0-150000.51.1
- (no CPE)range: < 7.60.0-11.60.1
- (no CPE)range: < 7.60.0-4.56.1
- (no CPE)range: < 7.60.0-4.56.1
Patches
Vulnerability mechanics
References
5- hackerone.com/reports/1891474nvdExploitThird Party Advisory
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/36NBD5YLJXXEDZLDGNFCERWRYJQ6LAQW/nvdMailing ListThird Party Advisory
- security.gentoo.org/glsa/202310-12nvdThird Party Advisory
- security.netapp.com/advisory/ntap-20230420-0011/nvdThird Party Advisory
- lists.debian.org/debian-lts-announce/2023/04/msg00025.htmlnvdMailing List
News mentions
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