CVE-2021-3496

HIGH
Published Apr 22, 20215y ago · Modified Jun 17, 20262w ago
7.8 CVSS 3.1
High
Find Similar
Published Apr 22, 2021 5y ago
Last Modified Jun 17, 2026 2w ago

Description

A heap-based buffer overflow was found in jhead in version 3.06 in Get16u() in exif.c when processing a crafted file.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 2

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer Memory Safety
CWE-787 Out-of-bounds Write Memory Safety

Affected Products 1

VendorProductVersionRange
jhead_projectjhead3.06any

References 3

  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=1949245
    Issue TrackingThird Party Advisory
  • github.com https://github.com/Matthias-Wandel/jhead/issues/33
    ExploitPatchThird Party Advisory
  • security.gentoo.org https://security.gentoo.org/glsa/202210-17
    Third Party Advisory

Remediation

  • github.com https://github.com/Matthias-Wandel/jhead/issues/33
    ExploitPatchThird Party Advisory