Medium severity5.9NVD Advisory· Published Feb 9, 2023· Updated Oct 14, 2026
CVE-2022-43552
CVE-2022-43552
Description
A use after free vulnerability exists in curl <7.87.0. Curl can be asked to *tunnel* virtually all protocols it supports through an HTTP proxy. HTTP proxies can (and often do) deny such tunnel operations. When getting denied to tunnel the specific protocols SMB or TELNET, curl would use a heap-allocated struct after it had been freed, in its transfer shutdown code path.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
47- osv-coords41 versionspkg:rpm/opensuse/curl&distro=openSUSE%20Leap%20Micro%205.2pkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:apk/wolfi/curl-staticpkg:rpm/suse/curl&distro=SUSE%20OpenStack%20Cloud%209pkg:apk/chainguard/curlpkg:rpm/suse/curl&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209pkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/opensuse/curl&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/curl&distro=openSUSE%20Leap%20Micro%205.3pkg:rpm/opensuse/curl&distro=openSUSE%20Leap%2015.4pkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Micro%205.2pkg:apk/chainguard/curl-devpkg:apk/chainguard/curl-oci-entrypointpkg:apk/chainguard/curl-staticpkg:apk/chainguard/libcurl-openssl4pkg:apk/wolfi/libcurl-openssl4pkg:apk/wolfi/libcurl4pkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSSpkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/curl&distro=SUSE%20Enterprise%20Storage%206pkg:rpm/opensuse/curl&distro=openSUSE%20Tumbleweedpkg:rpm/almalinux/curlpkg:rpm/almalinux/libcurlpkg:rpm/almalinux/libcurl-develpkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Micro%205.3pkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Micro%205.1pkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP4pkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:apk/chainguard/curl-docpkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2015%20SP3pkg:apk/chainguard/libcurl4pkg:apk/wolfi/curlpkg:apk/wolfi/curl-devpkg:apk/wolfi/curl-docpkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-ESPOSpkg:rpm/almalinux/curl-minimalpkg:apk/wolfi/curl-oci-entrypointpkg:rpm/almalinux/libcurl-minimal
< 7.66.0-150200.4.45.1+ 40 more
- (no CPE)range: < 7.66.0-150200.4.45.1
- (no CPE)range: < 7.60.0-4.56.1
- (no CPE)range: < 7.87.0-r0
- (no CPE)range: < 7.60.0-4.56.1
- (no CPE)range: < 7.87.0-r0
- (no CPE)range: < 7.60.0-4.56.1
- (no CPE)range: < 7.60.0-11.52.1
- (no CPE)range: < 7.66.0-150200.4.45.1
- (no CPE)range: < 7.79.1-150400.5.12.1
- (no CPE)range: < 7.79.1-150400.5.12.1
- (no CPE)range: < 7.60.0-11.52.1
- (no CPE)range: < 7.66.0-150200.4.45.1
- (no CPE)range: < 7.87.0-r0
- (no CPE)range: < 7.87.0-r0
- (no CPE)range: < 7.87.0-r0
- (no CPE)range: < 7.87.0-r0
- (no CPE)range: < 7.87.0-r0
- (no CPE)range: < 7.87.0-r0
- (no CPE)range: < 7.60.0-4.56.1
- (no CPE)range: < 7.60.0-150000.51.1
- (no CPE)range: < 7.60.0-150000.51.1
- (no CPE)range: < 7.60.0-150000.51.1
- (no CPE)range: < 7.87.0-1.1
- (no CPE)range: < 7.76.1-23.el9
- (no CPE)range: < 7.76.1-23.el9
- (no CPE)range: < 7.76.1-23.el9
- (no CPE)range: < 7.79.1-150400.5.12.1
- (no CPE)range: < 7.66.0-150200.4.45.1
- (no CPE)range: < 7.79.1-150400.5.12.1
- (no CPE)range: < 7.60.0-11.52.1
- (no CPE)range: < 7.87.0-r0
- (no CPE)range: < 7.66.0-150200.4.45.1
- (no CPE)range: < 7.87.0-r0
- (no CPE)range: < 7.87.0-r0
- (no CPE)range: < 7.87.0-r0
- (no CPE)range: < 7.87.0-r0
- (no CPE)range: < 7.60.0-150000.51.1
- (no CPE)range: < 7.60.0-4.56.1
- (no CPE)range: < 7.76.1-23.el9
- (no CPE)range: < 7.87.0-r0
- (no CPE)range: < 7.76.1-23.el9
cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:*range: >=8.2.0,<8.2.12
- cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
7- hackerone.com/reports/1764858nvdExploitIssue TrackingThird Party Advisory
- seclists.org/fulldisclosure/2023/Mar/17nvdMailing ListThird Party Advisory
- security.gentoo.org/glsa/202310-12nvdThird Party Advisory
- security.netapp.com/advisory/ntap-20230214-0002/nvdVendor Advisory
- support.apple.com/kb/HT213670nvdThird Party Advisory
- cert-portal.siemens.com/productcert/html/ssa-398330.htmlnvd
- cert-portal.siemens.com/productcert/html/ssa-892048.htmlnvd
News mentions
0No linked articles in our index yet.