CVE-2016-4463

Publication date 8 July 2016

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

Stack-based buffer overflow in Apache Xerces-C++ before 3.1.4 allows context-dependent attackers to cause a denial of service via a deeply nested DTD.

From the Ubuntu Security Team

It was discovered that Xerces-C XML Parser fails to successfully parse a DTD that is too deeply nested. An unauthenticated attacker could use this vulnerability to cause a denial of service.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
xerces-c	22.04 LTS jammy	Not affected
	21.10 impish	Not affected
	21.04 hirsute	Not affected
	20.10 groovy	Not affected
	20.04 LTS focal	Not affected
	19.10 eoan	Not affected
	19.04 disco	Not affected
	18.10 cosmic	Not affected
	18.04 LTS bionic	Not affected
	17.10 artful	Ignored end of life
	17.04 zesty	Ignored end of life
	16.10 yakkety	Ignored end of life
	16.04 LTS xenial	Fixed 3.1.3+debian-1ubuntu0.1~esm1 Ubuntu Pro
	15.10 wily	Fixed 3.1.1-5.1+deb8u3build0.15.10.1
	14.04 LTS trusty	Fixed 3.1.1-5.1+deb8u3build0.14.04.1
	12.04 LTS precise	Ignored end of life

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
xerces-c	Upstream: http://svn.apache.org/viewvc?view=revision&revision=1747619

Severity score breakdown

Parameter	Value
Base score	7.5 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-4784-1
Xerces-C++ vulnerabilities
15 March 2021