MobSF: Zip Bomb Denial of Service via Per-File Size Limit Bypass in ZIP/APK Extraction
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 4.9epss 0.5%
exploitation probability
0.5%top 58% of all CVEs
observed exploitation
nono source reports it
MobSF is a mobile application security testing tool used. Prior to 4.5.1, the unzip function in mobsf/StaticAnalyzer/views/common/shared_func.py logs that an archive member exceeding ZIP_MAX_UNCOMPRESSED_FILE_SIZE is being skipped but does not continue to the next member, so an authenticated user can upload a crafted ZIP or APK whose oversized member is extracted to disk when the aggregate ZIP_MAX_UNCOMPRESSED_TOTAL_SIZE limit has not yet been reached, potentially exhausting disk space and preventing further scans. This issue is fixed in version 4.5.1.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Affected products
MobSF · Mobile-Security-Framework-MobSFReferences
https://github.com/MobSF/Mobile-Security-Framework-MobSF/commit/62563ca429a75b3e5d47a13b958e1d2e7d5e2bbfhttps://github.com/MobSF/Mobile-Security-Framework-MobSF/pull/2627https://github.com/MobSF/Mobile-Security-Framework-MobSF/releases/tag/v4.5.1https://github.com/MobSF/Mobile-Security-Framework-MobSF/security/advisories/GHSA-x768-8642-mmq9