CVE-2024-22857: Heap Overflow (CVSS 9.8)

Description

Heap based buffer flow in zlog v1.1.0 to v1.2.17 in zlog_rule_new().The size of record_name is MAXLEN_PATH(1024) + 1 but file_path may have data upto MAXLEN_CFG_LINE(MAXLEN_PATH*4) + 1. So a check was missing in zlog_rule_new() while copying the record_name from file_path + 1 which caused the buffer overflow. An attacker can exploit this vulnerability to overwrite the zlog_record_fn record_func function pointer to get arbitrary code execution or potentially cause remote code execution (RCE).

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CVSS v3.1 Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-122 CWE-122

References

Other References

https://github.com/HardySimpson/zlog/ https://github.com/HardySimpson/zlog/blob/1a7b1a6fb956b92a4079ccc91f30da21f34ca063/src/rule.h#L30 https://github.com/HardySimpson/zlog/pull/251 https://www.cybersecurity-help.cz/vdb/SB2024022842 https://www.ebryx.com/blogs/arbitrary-code-execution-in-zlog-cve-2024-22857 https://github.com/HardySimpson/zlog/ https://github.com/HardySimpson/zlog/blob/1a7b1a6fb956b92a4079ccc91f30da21f34ca063/src/rule.h#L30 https://github.com/HardySimpson/zlog/pull/251 https://www.cybersecurity-help.cz/vdb/SB2024022842 https://www.ebryx.com/blogs/arbitrary-code-execution-in-zlog-cve-2024-22857

Frequently Asked Questions

What is CVE-2024-22857? +

Heap based buffer flow in zlog v1.1.0 to v1.2.17 in zlog_rule_new().The size of record_name is MAXLEN_PATH(1024) + 1 but file_path may have data upto MAXLEN_CFG_LINE(MAXLEN_PATH*4) + 1. So a check was missing in zlog_rule_new() while copying the record_name from file_path + 1 which caused the buffer overflow. An attacker can exploit this vulnerability to overwrite the zlog_record_fn record_func function pointer to get arbitrary code execution or potentially cause remote code execution (RCE). It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2024-22857? +

CVE-2024-22857 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

How do I check if I'm vulnerable to CVE-2024-22857? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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