Medium severity · published Feb 9, 2023
CVE-2022-43552
A use after free vulnerability exists in curl <7.87.0
5.9
CVSS
2.7%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.7% · higher than 86% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MA
macOS · Apple
13.0 before 13.3 · source: NVD
HT
https://github.com/curl/curl ·
Fixed in curl 7.87.0 · source: vendor
CU
Curl · Haxx
before 7.87.0 · source: NVD
UF
Universal Forwarder · Splunk
8.2.0 before 8.2.12; 9.0.0 before 9.0.6; 9.1.0 · source: NVD
SS
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5; V3.1.0 before V3.1.5 · source: CISA
SS
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5; V3.1.0 before V3.1.5 · source: CISA
SS
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5 · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-43552
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-43552
Mailing List
http://seclists.org/fulldisclosure/2023/Mar/17
Exploit
https://hackerone.com/reports/1764858
Third Party Advisory
https://security.gentoo.org/glsa/202310-12
Vendor Advisory
https://security.netapp.com/advisory/ntap-20230214-0002/
Third Party Advisory
https://support.apple.com/kb/HT213670
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-398330.html
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