CVE-2016-6303

Publication date 16 September 2016

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

Integer overflow in the MDC2_Update function in crypto/mdc2/mdc2dgst.c in OpenSSL before 1.1.0 allows remote attackers to cause a denial of service (out-of-bounds write and application crash) or possibly have unspecified other impact via unknown vectors.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
openssl	19.04 disco	Fixed 1.0.2g-1ubuntu9
	18.10 cosmic	Fixed 1.0.2g-1ubuntu9
	18.04 LTS bionic	Fixed 1.0.2g-1ubuntu9
	17.10 artful	Fixed 1.0.2g-1ubuntu9
	17.04 zesty	Fixed 1.0.2g-1ubuntu9
	16.10 yakkety	Fixed 1.0.2g-1ubuntu9
	16.04 LTS xenial	Fixed 1.0.2g-1ubuntu4.4
	14.04 LTS trusty	Fixed 1.0.1f-1ubuntu2.20
	12.04 LTS precise	Fixed 1.0.1-4ubuntu5.37
openssl098	19.04 disco	Not in release
	18.10 cosmic	Not in release
	18.04 LTS bionic	Not in release
	17.10 artful	Not in release
	17.04 zesty	Not in release
	16.10 yakkety	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Ignored end of life

Patch details

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

Package	Patch details
openssl	Upstream: https://git.openssl.org/?p=openssl.git;a=commit;h=2b4029e68fd7002d2307e6c3cde0f3784eef9c83 Upstream: https://git.openssl.org/?p=openssl.git;a=commit;h=1027ad4f34c30b8585592764b9a670ba36888269 Upstream: https://git.openssl.org/?p=openssl.git;a=commit;h=55d83bf7c10c7b205fffa23fa7c3977491e56c07

Severity score breakdown

Parameter	Value
Base score	9.8 · Critical
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-3087-1
OpenSSL vulnerabilities
22 September 2016