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CVE-2016-0799

Published: 1 March 2016

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.

Priority

Low

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
openssl
Launchpad, Ubuntu, Debian
artful
Released (1.0.2g-1ubuntu2)
bionic
Released (1.0.2g-1ubuntu2)
cosmic
Released (1.0.2g-1ubuntu2)
disco
Released (1.0.2g-1ubuntu2)
precise
Released (1.0.1-4ubuntu5.35)
trusty
Released (1.0.1f-1ubuntu2.18)
upstream Needs triage

wily
Released (1.0.2d-0ubuntu1.4)
xenial
Released (1.0.2g-1ubuntu2)
yakkety
Released (1.0.2g-1ubuntu2)
zesty
Released (1.0.2g-1ubuntu2)
Patches:
upstream: https://git.openssl.org/?p=openssl.git;a=commit;h=a801bf263849a2ef773e5bc0c86438cbba720835 (1.0.1)
upstream: https://git.openssl.org/?p=openssl.git;a=commit;h=578b956fe741bf8e84055547b1e83c28dd902c73 (1.0.2)
openssl098
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

precise Ignored
(end of life)
trusty Does not exist
(trusty was needed)
upstream Needs triage

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

Severity score breakdown

Parameter Value
Base score 9.8
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