Allocation of Resources Without Limits or Throttling in Exiv2 - CVE-2020-18899

Vulnerability identifier: #VU84708

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-18899

CWE-ID: CWE-770

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to an uncontrolled memory allocation in DataBufdata(subBox.length-sizeof(box)) function. A remote attacker can pass specially crafted file to the application and perform a denial of service (DoS) attack.

Exiv2
Gentoo Linux
Ubuntu
exiv2 (Ubuntu package)
media-gfx/exiv2

Install updates from vendor's website.

Exiv2 - update to 0.27.1
exiv2 (Ubuntu package) - addressed in versions 0.25-2.1ubuntu16.04.7+esm5, 0.25-3.1ubuntu0.18.04.11+esm1, 0.27.2-8ubuntu2.7+esm1, 0.27.2-8ubuntu2.7+esm3, 0.27.5-3ubuntu1.1, 0.27.5-3ubuntu1.3, 0.27.6-1ubuntu0.1, 0.27.6-1ubuntu0.3, 0.28.5+dfsg-1ubuntu0.1, 0.28.5+dfsg-1ubuntu0.3
media-gfx/exiv2 - update to 0.28.1

• https://github.com/Exiv2/exiv2/issues/742

• Multiple vulnerabilities in GNU Exiv2
• Gentoo update for Exiv2
• Ubuntu update for exiv2
• Ubuntu update for exiv2