Vulnerability · Published Apr 28, 2021 · Assigned by fedora
CVE-2021-3508
Medium 5.5
In plain English
A medium-severity infinite loop in PDFResurrect. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 53% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.7%top 46.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
A flaw was found in PDFResurrect in version 0.22b. There is an infinite loop in get_xref_linear_skipped() in pdf.c via a crafted PDF file.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | pdfresurrect | 0.22-3 | DEBIAN-CVE-2021-3508 |
| Debian:13 | pdfresurrect | 0.22-3 | DEBIAN-CVE-2021-3508 |
| Debian:14 | pdfresurrect | 0.22-3 | DEBIAN-CVE-2021-3508 |
| Ubuntu:24.04:LTS | pdfresurrect | no fix listed | UBUNTU-CVE-2021-3508 |
| Ubuntu:25.10 | pdfresurrect | no fix listed | UBUNTU-CVE-2021-3508 |
| Ubuntu:26.04:LTS | pdfresurrect | no fix listed | UBUNTU-CVE-2021-3508 |
| Ubuntu:26.10 | pdfresurrect | no fix listed | UBUNTU-CVE-2021-3508 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | PDFResurrect | PDFResurrect 0.23b |
Weakness: CWE-835
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1951198 x_refsource_MISC
- https://github.com/enferex/pdfresurrect/issues/17 x_refsource_MISC