What’s Vulnerable › Vulnerabilities

CVE-2024-22857

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-03-07 · updated 2026-06-17
• Weakness: CWE-122

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).

Affected products

• Zlog Project Zlog: from 1.1.0 through 1.2.17

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

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