CVE - CVE-2023-38545

CVE-ID
CVE-2023-38545	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
This flaw makes curl overflow a heap based buffer in the SOCKS5 proxy handshake. When curl is asked to pass along the host name to the SOCKS5 proxy to allow that to resolve the address instead of it getting done by curl itself, the maximum length that host name can be is 255 bytes. If the host name is detected to be longer, curl switches to local name resolving and instead passes on the resolved address only. Due to this bug, the local variable that means "let the host resolve the name" could get the wrong value during a slow SOCKS5 handshake, and contrary to the intention, copy the too long host name to the target buffer instead of copying just the resolved address there. The target buffer being a heap based buffer, and the host name coming from the URL that curl has been told to operate with.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
CONFIRM:https://security.netapp.com/advisory/ntap-20231027-0009/ CONFIRM:https://security.netapp.com/advisory/ntap-20240201-0005/ CONFIRM:https://support.apple.com/kb/HT214036 CONFIRM:https://support.apple.com/kb/HT214057 CONFIRM:https://support.apple.com/kb/HT214058 CONFIRM:https://support.apple.com/kb/HT214063 FEDORA:FEDORA-2023-fef2b8da32 URL:https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OGMXNRNSJ4ETDK6FRNU3J7SABXPWCHSQ/ FULLDISC:20240126 APPLE-SA-01-22-2024-3 iOS 16.7.5 and iPadOS 16.7.5 URL:http://seclists.org/fulldisclosure/2024/Jan/34 FULLDISC:20240126 APPLE-SA-01-22-2024-6 macOS Ventura 13.6.4 URL:http://seclists.org/fulldisclosure/2024/Jan/37 FULLDISC:20240126 APPLE-SA-01-22-2024-7 macOS Monterey 12.7.3 URL:http://seclists.org/fulldisclosure/2024/Jan/38 MISC:https://www.secpod.com/blog/high-severity-heap-buffer-overflow-vulnerability/ MISC:https://curl.se/docs/CVE-2023-38545.html URL:https://curl.se/docs/CVE-2023-38545.html
Assigning CNA
HackerOne
Date Record Created
20230720	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20230720)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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