CVE-2021-3496

Ubuntu Security Notice USN-6110-1

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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

Se encontró un desbordamiento de búfer en la región heap de la memoria en jhead en versión 3.06, en la función Get16u() en el archivo exif.c cuando se procesa un archivo diseñado

An update that fixes 9 vulnerabilities is now available. This update for jhead fixes the following issues. Jhead was updated to 3.06.0.1 lot of fuzztest fixes Apply a whole bunch of patches from Debian. Spell check and fuzz test stuff from Debian, nothing useful to human users. Add option to set exif date from date from another file. Bug fixes relating to fuzz testing. Fixed bug where thumbnail replacement DID NOT WORK. Fixed bug when no orientation tag is present. Fixed bug of not clearing exif information when processing images with an without exif data in one invocation. Remove some unnecessary warnings with some types of GPS data Remove multiple copies of the same type of section when deleting section types.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-04-13 CVE Reserved
2021-04-22 CVE Published
2024-08-03 CVE Updated
2024-08-03 First Exploit
2025-06-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

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

CAPEC

References (3)

URL	Tag	Source
https://bugzilla.redhat.com/show_bug.cgi?id=1949245	Issue Tracking

URL	Date	SRC
https://github.com/Matthias-Wandel/jhead/issues/33	2024-08-03

URL	Date	SRC

URL	Date	SRC
https://security.gentoo.org/glsa/202210-17	2022-12-21

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Jhead Project Search vendor "Jhead Project"		Jhead Search vendor "Jhead Project" for product "Jhead"				3.06 Search vendor "Jhead Project" for product "Jhead" and version "3.06"		-		Affected