CVE-2023-34253
CVSS v3
7.2
HIGH
Score EPSS
1.6 %
probabilité d’exploitation
CISA KEV
Non
exploitation connue
Exploitation
—
statut SSVC
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.
Détails techniques
- Publiée le
- 2023-06-14
Questions fréquentes
Qu’est-ce que CVE-2023-34253 ?
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.
CVE-2023-34253 est-elle activement exploitée ?
Aucune exploitation active de CVE-2023-34253 n’est confirmée. Le score EPSS est de 1.6 %, soit la probabilité estimée d’exploitation dans les 30 prochains jours.
Quel est le score CVSS de CVE-2023-34253 ?
CVE-2023-34253 a un score de base CVSS v3 de 7.2 (gravité HIGH).
CVE-2023-34253 touche-t-elle votre environnement ?
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Classées par probabilité d’exploitation (EPSS).