CVE-2024-7868 Uninitialized variable in Xpdf 4.05 due to invalid JPEG header

2024-08-1520:22:52

CWE-908

GandC

github.com

xpdf 4.05

uninitialized variable

invalid jpeg header

dct stream

segfault

CVSS4

2.1

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:N/VC:N/SC:N/VI:N/SI:N/VA:L/SA:N

AI Score

6.7

Confidence

Low

EPSS

0.001

Percentile

17.7%

SSVC

Exploitation

none

Automatable

Technical Impact

partial

JSON

In Xpdf 4.05 (and earlier), invalid header info in a DCT (JPEG) stream can lead to an uninitialized variable in the DCT decoder. The proof-of-concept PDF file causes a segfault attempting to read from an invalid address.

CNA Affected

[
  {
    "vendor": "Xpdf",
    "product": "Xpdf",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "versionType": "Version",
        "lessThanOrEqual": "4.05"
      }
    ],
    "platforms": [
      "all"
    ],
    "defaultStatus": "unaffected"
  }
]