CVE-2023-34253
CVSS V2 None
CVSS V3 None
Description
Grav is a flat-file content management system. Prior to version 1.7.42, the denylist introduced in commit 9d6a2d to prevent dangerous functions from being executed via injection of malicious templates was insufficient and could be easily subverted in multiple ways -- (1) using unsafe functions that are not banned, (2) using capitalised callable names, and (3) using fully-qualified names for referencing callables. Consequently, a low privileged attacker with login access to Grav Admin panel and page creation/update permissions is able to inject malicious templates to obtain remote code execution. A patch in version 1.7.42 improves the denylist.
Overview
- CVE ID
- CVE-2023-34253
- Assigner
- GitHub_M
- Vulnerability Status
- PUBLISHED
- Published Version
- 2023-06-14T22:00:12.569Z
- Last Modified Date
- 2023-06-14T22:16:52.675Z
Weakness Enumerations
References
| Reference URL | Reference Tags |
|---|---|
| https://github.com/getgrav/grav/security/advisories/GHSA-j3v8-v77f-fvgm | x_refsource_CONFIRM |
| https://github.com/getgrav/grav/commit/71bbed12f950de8335006d7f91112263d8504f1b | x_refsource_MISC |
| https://github.com/getgrav/grav/blob/1.7.40/system/src/Grav/Common/Utils.php#L1952-L2190 | x_refsource_MISC |
| https://huntr.dev/bounties/3ef640e6-9e25-4ecb-8ec1-64311d63fe66/ | x_refsource_MISC |
| https://www.github.com/getgrav/grav/commit/9d6a2dba09fd4e56f5cdfb9a399caea355bfeb83 | x_refsource_MISC |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2023-34253 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-34253 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2024-06-25 20:58:35 | Added to TrackCVE |