EUVD-2025-18504
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Lifecycle Timeline
5Description
A flaw was found in libgepub, a library used to read EPUB files. The software mishandles file size calculations when opening specially crafted EPUB files, leading to incorrect memory allocations. This issue causes the application to crash. Known affected usage includes desktop services like Tumbler, which may process malicious files automatically when browsing directories. While no direct remote attack vectors are confirmed, any application using libgepub to parse user-supplied EPUB content could be vulnerable to a denial of service.
Analysis
A flaw was found in libgepub, a library used to read EPUB files. The software mishandles file size calculations when opening specially crafted EPUB files, leading to incorrect memory allocations. This issue causes the application to crash. Known affected usage includes desktop services like Tumbler, which may process malicious files automatically when browsing directories. While no direct remote attack vectors are confirmed, any application using libgepub to parse user-supplied EPUB content could be vulnerable to a denial of service.
Technical Context
An integer overflow occurs when an arithmetic operation produces a value that exceeds the maximum (or minimum) size of the integer type used to store it. This vulnerability is classified as Integer Overflow or Wraparound (CWE-190).
Affected Products
Affected products: Gnome Libgepub -
Remediation
Use safe integer arithmetic libraries. Check for overflow conditions before operations. Use appropriately sized integer types.
Priority Score
Vendor Status
Ubuntu
Priority: Medium| Release | Status | Version |
|---|---|---|
| bionic | needs-triage | - |
| focal | needs-triage | - |
| jammy | needs-triage | - |
| noble | needs-triage | - |
| plucky | not-affected | 0.7.3-1 |
| upstream | released | 0.7.3-1 |
| oracular | ignored | end of life, was needs-triage |
| questing | not-affected | - |
Debian
| Release | Status | Fixed Version | Urgency |
|---|---|---|---|
| bullseye | vulnerable | 0.6.0-2 | - |
| bookworm | vulnerable | 0.7.0-2 | - |
| trixie | fixed | 0.7.3-1 | - |
| forky, sid | fixed | 0.7.3-2 | - |
| (unstable) | fixed | 0.7.3-1 | - |
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External POC / Exploit Code
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