CVE-2019-13627

Published: 25 September 2019

It was discovered that there was a ECDSA timing attack in the libgcrypt20 cryptographic library. Version affected: 1.8.4-5, 1.7.6-2+deb9u3, and 1.6.3-2+deb8u4. Versions fixed: 1.8.5-2 and 1.6.3-2+deb8u7.

Notes

Author	Note
leosilva	patch breaks dsa-rfc6979.c tests in Xenial.

Priority

Cvss 3 Severity Score

6.3

Score breakdown

Status

Package	Release	Status
libgcrypt20 Launchpad, Ubuntu, Debian	upstream	Released (1.8.5-1)
	trusty	Does not exist
	xenial	Released (1.6.5-2ubuntu0.6)
	bionic	Released (1.8.1-4ubuntu1.2)
	disco	Released (1.8.4-3ubuntu1.1)
	eoan	Released (1.8.4-5ubuntu2.1)
	Patches: upstream: https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=b9577f7c89b4327edc09f2231bc8b31521102c79 (master) upstream: https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=7c2943309d14407b51c8166c4dcecb56a3628567 (master) upstream: https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=d5407b78cca9f9d318a4f4d2f6ba2b8388584cd9 (1.8.5) upstream: https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=db4e9976cc31b314aafad6626b2894e86ee44d60 (1.8.5)
libgcrypt11 Launchpad, Ubuntu, Debian	upstream	Needs triage
	trusty	Released (1.5.3-2ubuntu4.6+esm1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	xenial	Does not exist
	bionic	Does not exist
	disco	Does not exist
	eoan	Does not exist

Severity score breakdown

Parameter	Value
Base score	6.3
Attack vector	Local
Attack complexity	High
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	None
Vector	CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

References

Bugs

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=938938

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