CVE-2022-43552
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
02 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
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 2.71% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 85.7% of scored records. A rank, not a probability.
- NVD base score
- 5.9 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-10-23.
- Red Hat severity
- Low. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2023-02-09 00:00Z3 YR AGO
- Last updated
- 2026-10-14 18:26Z15 DAYS AGO
- Reserved
- 2022-10-20
- Assigning CNA
- hackerone
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 5.9)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-416Use After FreeVariant
- Data version
- 5.2
- Document digest
- 4a5cec54ea5e185ea44009f5241c9c84f1dc674d7f14278c4c3a2c44d4c8e48f
05 Affected products
06 References
- hackerone.comhttps://hackerone.com/reports/1764858
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20230214-0002/
- support.apple.comhttps://support.apple.com/kb/HT213670
- seclists.org20230327 APPLE-SA-2023-03-27-3 macOS Ventura 13.3http://seclists.org/fulldisclosure/2023/Mar/17
- security.gentoo.orgGLSA-202310-12https://security.gentoo.org/glsa/202310-12
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-892048.html
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-398330.html
07 Fixed in
AlmaLinux 8
- curl Fixed in 7.61.1-30.el8
- libcurl Fixed in 7.61.1-30.el8
- libcurl-devel Fixed in 7.61.1-30.el8
- libcurl-minimal Fixed in 7.61.1-30.el8
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
AlmaLinux 9
- curl Fixed in 7.76.1-23.el9
- curl-minimal Fixed in 7.76.1-23.el9
- libcurl Fixed in 7.76.1-23.el9
- libcurl-devel Fixed in 7.76.1-23.el9
- libcurl-minimal Fixed in 7.76.1-23.el9
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 8
- curl Fixed in 7.61.1-30.el8
- libcurl Fixed in 7.61.1-30.el8
- libcurl-devel Fixed in 7.61.1-30.el8
- libcurl-minimal Fixed in 7.61.1-30.el8
Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 9
- curl Fixed in 7.76.1-23.el9
- curl-minimal Fixed in 7.76.1-23.el9
- libcurl Fixed in 7.76.1-23.el9
- libcurl-devel Fixed in 7.76.1-23.el9
- libcurl-minimal Fixed in 7.76.1-23.el9
Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Debian 12
- curl Fixed in 7.86.0-3
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- curl Fixed in 7.86.0-3
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- curl Fixed in 7.86.0-3
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- curl Fixed in 7.58.0-2ubuntu3.22
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- curl Fixed in 7.68.0-1ubuntu2.15
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- curl Fixed in 7.81.0-1ubuntu1.7
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 14.04 LTS
- curl Fixed in 7.35.0-1ubuntu2.20+esm14Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 16.04 LTS
- curl Fixed in 7.47.0-1ubuntu2.19+esm7Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.