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CVE-2016-2177

Published: 19 June 2016

OpenSSL through 1.0.2h incorrectly uses pointer arithmetic for heap-buffer boundary checks, which might allow remote attackers to cause a denial of service (integer overflow and application crash) or possibly have unspecified other impact by leveraging unexpected malloc behavior, related to s3_srvr.c, ssl_sess.c, and t1_lib.c.

Notes

AuthorNote
mdeslaur
USN-3087-1 fixed this CVE in Ubuntu 16.04 LTS. Other Ubuntu
releases will be fixed in a future USN.

Priority

Low

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
openssl
Launchpad, Ubuntu, Debian
artful
Released (1.0.2g-1ubuntu9)
bionic
Released (1.0.2g-1ubuntu9)
cosmic
Released (1.0.2g-1ubuntu9)
disco
Released (1.0.2g-1ubuntu9)
precise
Released (1.0.1-4ubuntu5.39)
trusty
Released (1.0.1f-1ubuntu2.22)
upstream
Released (1.0.2i, 1.0.1u)
wily Ignored
(end of life)
xenial
Released (1.0.2g-1ubuntu4.4)
yakkety
Released (1.0.2g-1ubuntu9)
zesty
Released (1.0.2g-1ubuntu9)
Patches:
upstream: https://git.openssl.org/?p=openssl.git;a=commit;h=a004e72b95835136d3f1ea90517f706c24c03da7 (1.0.2)
upstream: https://git.openssl.org/?p=openssl.git;a=commit;h=89c2720298f875ac80777da2da88a64859775898 (bp)
upstream: https://git.openssl.org/?p=openssl.git;a=commit;h=e4840c88c516d959785fcd842d8658d3b7a6ae43 (bp)
upstream: https://git.openssl.org/?p=openssl.git;a=commit;h=f141376ae2892b59f2b1af94204f925832f8dc3a (bp)
upstream: https://git.openssl.org/?p=openssl.git;a=commit;h=6f35f6deb5ca7daebe289f86477e061ce3ee5f46 (1.0.1)
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 needs-triage)
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