CVE-2024-22857
So a check was missing in zlog_rule_new() while copying the record_name from file_path + 1 which caused the buffer overflow.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.69%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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).
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.69% probability · 76th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-122
- Source
- cve@mitre.org
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.