CVE-2016-9964

Publication date 16 December 2016

Last updated 25 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

6.5 · Medium

Score breakdown

Description

redirect() in bottle.py in bottle 0.12.10 doesn't filter a "\r\n" sequence, which leads to a CRLF attack, as demonstrated by a redirect("233\r\nSet-Cookie: name=salt") call.

From the Ubuntu Security Team

It was discovered that Bottle improperly handles headers. An attacker could possibly exploit this as a CRLF attack.

Status

Package Ubuntu Release Status
python-bottle 22.04 LTS jammy
Not affected
21.10 impish
Not affected
21.04 hirsute
Not affected
20.10 groovy
Not affected
20.04 LTS focal
Not affected
19.10 eoan
Not affected
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
Fixed 0.12.7-1+deb8u1build0.16.10.1
16.04 LTS xenial
Fixed 0.12.7-1+deb8u1build0.16.04.1
14.04 LTS trusty
Fixed 0.12.0-1ubuntu0.1~esm1
12.04 LTS precise Ignored end of life

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Patch details

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

Package Patch details
python-bottle

Severity score breakdown

Parameter Value
Base score 6.5 · Medium
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact High
Availability impact None
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

References

Other references