CVE-2016-0799

Publication date 1 March 2016

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

The fmtstr function in crypto/bio/b_print.c in OpenSSL 1.0.1 before 1.0.1s and 1.0.2 before 1.0.2g improperly calculates string lengths, which allows remote attackers to cause a denial of service (overflow and out-of-bounds read) or possibly have unspecified other impact via a long string, as demonstrated by a large amount of ASN.1 data, a different vulnerability than CVE-2016-2842.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
openssl	19.04 disco	Fixed 1.0.2g-1ubuntu2
	18.10 cosmic	Fixed 1.0.2g-1ubuntu2
	18.04 LTS bionic	Fixed 1.0.2g-1ubuntu2
	17.10 artful	Fixed 1.0.2g-1ubuntu2
	17.04 zesty	Fixed 1.0.2g-1ubuntu2
	16.10 yakkety	Fixed 1.0.2g-1ubuntu2
	16.04 LTS xenial	Fixed 1.0.2g-1ubuntu2
	15.10 wily	Fixed 1.0.2d-0ubuntu1.4
	14.04 LTS trusty	Fixed 1.0.1f-1ubuntu2.18
	12.04 LTS precise	Fixed 1.0.1-4ubuntu5.35
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
	15.10 wily	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=a801bf263849a2ef773e5bc0c86438cbba720835 Upstream: https://git.openssl.org/?p=openssl.git;a=commit;h=578b956fe741bf8e84055547b1e83c28dd902c73

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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-2914-1
OpenSSL vulnerabilities
1 March 2016