CVE-2016-6313

The mixing functions in the random number generator in Libgcrypt before 1.5.6, 1.6.x before 1.6.6, and 1.7.x before 1.7.3 and GnuPG before 1.4.21 make it easier for attackers to obtain the values of 160 bits by leveraging knowledge of the previous 4640 bits.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
gnupg	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	Fixed 1.4.20-1ubuntu3.1
	14.04 LTS trusty	Fixed 1.4.16-1ubuntu2.4
	12.04 LTS precise	Fixed 1.4.11-3ubuntu2.10
gnupg2	19.04 disco	Not affected
	18.10 cosmic	Not affected
	18.04 LTS bionic	Not affected
	17.10 artful	Not affected
	17.04 zesty	Not affected
	16.10 yakkety	Not affected
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Not affected
libgcrypt11	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	Fixed 1.5.3-2ubuntu4.4
	12.04 LTS precise	Fixed 1.5.0-3ubuntu0.6
libgcrypt20	19.04 disco	Fixed 1.7.2-2ubuntu1
	18.10 cosmic	Fixed 1.7.2-2ubuntu1
	18.04 LTS bionic	Fixed 1.7.2-2ubuntu1
	17.10 artful	Fixed 1.7.2-2ubuntu1
	17.04 zesty	Fixed 1.7.2-2ubuntu1
	16.10 yakkety	Fixed 1.7.2-2ubuntu1
	16.04 LTS xenial	Fixed 1.6.5-2ubuntu0.2
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Not in release

Notes

mdeslaur

CVE number in announcement is wrong

Patch details

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

Package	Patch details
gnupg	Upstream: http://git.gnupg.org/cgi-bin/gitweb.cgi?p=gnupg.git;a=commit;h=e23eec8c9a602eee0a09851a54db0f5d611f125c Upstream: http://git.gnupg.org/cgi-bin/gitweb.cgi?p=gnupg.git;a=commit;h=c6dbfe89903d0c8191cf50ecf1abb3c8458b427a
libgcrypt11	Upstream: http://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=98980e2fd29ad62903c78fa6521489fce651cdda Upstream: http://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=6199cd963d1fba86e0b7b9e2de4b6c00b945193a
libgcrypt20	Upstream: http://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=2f62103b4bb6d6f9ce806e01afb7fdc58aa33513 Upstream: http://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=8dd45ad957b54b939c288a68720137386c7f6501 Upstream: http://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=190b0429b70eb4a3573377e95755d9cc13c38461 Upstream: http://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=c748f87436d693f092a4484571a3cc7f650b5c81

Severity score breakdown

Parameter	Value
Base score	5.3 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	Low
Integrity impact	None
Availability impact	None
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Cvss 3 Severity Score

Status

Notes

mdeslaur

Patch details

Severity score breakdown

References

Related Ubuntu Security Notices (USN)

Other references