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CVE-2023-52887

7.5 · HIGH

In the Linux kernel, the following vulnerability has been resolved: net: can: j1939: enhanced error handling for tightly received RTS messages in xtp_rx_rts_session_new This patch enhances error…

Published Jul 29, 2024CWE-617EPSS 0.67%

Overview

CVE-2023-52887 is a high-severity vulnerability. It was published on July 29, 2024 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

net: can: j1939: enhanced error handling for tightly received RTS messages in xtp_rx_rts_session_new

This patch enhances error handling in scenarios with RTS (Request to

Send) messages arriving closely. It replaces the less informative WARN_ON_ONCE

backtraces with a new error handling method. This provides clearer error

messages and allows for the early termination of problematic sessions.

Previously, sessions were only released at the end of j1939_xtp_rx_rts().

Potentially this could be reproduced with something like:

testj1939 -r vcan0:0x80 &

while true; do

# send first RTS

cansend vcan0 18EC8090#1014000303002301;

# send second RTS

cansend vcan0 18EC8090#1014000303002301;

# send abort

cansend vcan0 18EC8090#ff00000000002301;

done

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/0bc0a7416ea73f79f915c9a05ac0858dff65cfedRefgit.kernel.org/stable/c/1762ca80c2b72dd1b5821c5e347713ae696276eaRefgit.kernel.org/stable/c/177e33b655d35d72866b50aec84307119dc5f3d4Refgit.kernel.org/stable/c/26b18dd30e63d4fd777be429148e8e4ed66f60b2Refgit.kernel.org/stable/c/d3e2904f71ea0fe7eaff1d68a2b0363c888ea0fbRefgit.kernel.org/stable/c/ed581989d7ea9df6f8646beba2341e32cd49a1f9Refgit.kernel.org/stable/c/f6c839e717901dbd6b1c1ca807b6210222eb70f6Refgit.kernel.org/stable/c/0bc0a7416ea73f79f915c9a05ac0858dff65cfedRefgit.kernel.org/stable/c/1762ca80c2b72dd1b5821c5e347713ae696276eaRefgit.kernel.org/stable/c/177e33b655d35d72866b50aec84307119dc5f3d4

How CyberStrike helps

Frequently asked questions

What is CVE-2023-52887?

CVE-2023-52887 is a high-severity vulnerability. It was published on July 29, 2024 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2023-52887?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-52887?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-52887?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-52887 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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