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CVE-2017-3731

Published: 26 January 2017

If an SSL/TLS server or client is running on a 32-bit host, and a specific cipher is being used, then a truncated packet can cause that server or client to perform an out-of-bounds read, usually resulting in a crash. For OpenSSL 1.1.0, the crash can be triggered when using CHACHA20/POLY1305; users should upgrade to 1.1.0d. For Openssl 1.0.2, the crash can be triggered when using RC4-MD5; users who have not disabled that algorithm should update to 1.0.2k.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
openssl
Launchpad, Ubuntu, Debian
artful
Released (1.0.2g-1ubuntu11)
bionic
Released (1.0.2g-1ubuntu11)
cosmic
Released (1.0.2g-1ubuntu11)
disco
Released (1.0.2g-1ubuntu11)
precise
Released (1.0.1-4ubuntu5.39)
trusty
Released (1.0.1f-1ubuntu2.22)
upstream Needs triage

xenial
Released (1.0.2g-1ubuntu4.6)
yakkety
Released (1.0.2g-1ubuntu9.1)
zesty
Released (1.0.2g-1ubuntu11)
Patches:
upstream: https://git.openssl.org/?p=openssl.git;a=commit;h=1a3701f4fe0530a40ec073cd78d02cfcc26c0f8e (bp)
upstream: https://git.openssl.org/?p=openssl.git;a=commit;h=51d009043670a627d6abe66894126851cf3690e9 (1.0.2)
upstream: https://git.openssl.org/?p=openssl.git;a=commit;h=f3a7e57c92b2c9b87dc4b2997f2ebda6781300d0 (1.1.0)
upstream: https://git.openssl.org/?p=openssl.git;a=commit;h=00d965474b22b54e4275232bc71ee0c699c5cd21 (1.1.0)
openssl098
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

precise Ignored
(end of life)
cosmic Does not exist

disco Does not exist

trusty Does not exist
(trusty was needs-triage)
upstream Needs triage

xenial Does not exist

yakkety Does not exist

zesty Does not exist

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H