Vulnerability · Published Jun 27, 2023 · Assigned by GandC
CVE-2023-3436Deadlock in Xpdf 4.04 due to PDF object stream references
Low 3.3
In plain English
A low-severity security flaw in Xpdf from Xpdf. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)3.3Low
Exploit odds (30 days)0.2%top 93.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
Xpdf 4.04 will deadlock on a PDF object stream whose "Length" field is itself in another object stream.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | xpdf | 4.05-r0 | ALPINE-CVE-2023-3436 |
| Alpine:v3.21 | xpdf | 4.05-r0 | ALPINE-CVE-2023-3436 |
| Alpine:v3.22 | xpdf | 4.05-r0 | ALPINE-CVE-2023-3436 |
| Alpine:v3.23 | xpdf | 4.05-r0 | ALPINE-CVE-2023-3436 |
| Alpine:v3.24 | xpdf | 4.05-r0 | ALPINE-CVE-2023-3436 |
| Ubuntu:22.04:LTS | ipe | no fix listed | UBUNTU-CVE-2023-3436 |
| Ubuntu:24.04:LTS | ipe | no fix listed | UBUNTU-CVE-2023-3436 |
| Ubuntu:25.10 | ipe | no fix listed | UBUNTU-CVE-2023-3436 |
| Ubuntu:26.04:LTS | ipe | no fix listed | UBUNTU-CVE-2023-3436 |
| Ubuntu:26.10 | ipe | no fix listed | UBUNTU-CVE-2023-3436 |
| Ubuntu:22.04:LTS | xpdf | no fix listed | UBUNTU-CVE-2023-3436 |
| Ubuntu:24.04:LTS | xpdf | no fix listed | UBUNTU-CVE-2023-3436 |
| Ubuntu:25.10 | xpdf | no fix listed | UBUNTU-CVE-2023-3436 |
| Ubuntu:26.04:LTS | xpdf | no fix listed | UBUNTU-CVE-2023-3436 |
| Ubuntu:26.10 | xpdf | no fix listed | UBUNTU-CVE-2023-3436 |
Affected products (as reported)
Weakness: CWE-833 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L