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CVE-2023-38545

CVE Details

Visit the official vulnerability details page for CVE-2023-38545 to learn more.

Initial Publication

01/27/2025

Last Update

02/21/2025

Third Party Dependency

curl

NIST CVE Summary

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.

CVE Severity

9.8

Our Official Summary

This is a critical vulnerability in the curl library, which affects versions from 7.69.0 up to, but not including, 8.4.0. This vulnerability involves a heap-based buffer overflow in the SOCKS5 proxy handshake, which can lead to remote code execution (RCE) or denial of service (DoS) under specific conditions.

The images where this vulnrability is have controls in place are not accessible outside the cluster. So the attacker needs to gain privileged access to the cluster to attempt this exploit. Also the containers do not allow execution of arbitrary code. Impact of this exploit is also low, since container reduces the attack surface.

Status

Open

Affected Products & Versions

VersionPalette EnterprisePalette Enterprise AirgapVerteXVerteX Airgap
4.6.7⚠️ Impacted✅ No Impact⚠️ Impacted✅ No Impact
4.6.6⚠️ Impacted✅ No Impact⚠️ Impacted✅ No Impact
4.5.22⚠️ Impacted✅ No Impact⚠️ Impacted✅ No Impact
4.5.21⚠️ Impacted✅ No Impact⚠️ Impacted✅ No Impact
4.5.20⚠️ Impacted✅ No Impact⚠️ Impacted✅ No Impact

Revision History

DateRevision
02/21/2025Official summary added
02/21/2025Impacted versions changed from 4.5.20, 4.5.21, 4.5.22, 4.6.6 to 4.5.20, 4.5.21, 4.5.22, 4.6.6, 4.6.7
02/17/2025Impacted versions changed from 4.5.20, 4.5.21, 4.5.22 to 4.5.20, 4.5.21, 4.5.22, 4.6.6
02/14/2025Impacted versions changed from 4.5.20, 4.5.21 to 4.5.20, 4.5.21, 4.5.22
02/05/2025Impacted versions changed from 4.5.20 to 4.5.20, 4.5.21