VulnerabilityModified
CVE-2016-5699
CRLF injection vulnerability in the HTTPConnection.putheader function in urllib2 and urllib in CPython (aka Python) before 2.7.10 and 3.x before 3.4.4 allows remote attackers to inject arbitrary HTTP headers via CRLF sequences in a URL.
MEDIUM 6.1EPSS 9.89%
Does this matter?
Lower severity and a low EPSS score (9.89%). Track it; it rarely justifies an emergency change on its own.
Description
CRLF injection vulnerability in the HTTPConnection.putheader function in urllib2 and urllib in CPython (aka Python) before 2.7.10 and 3.x before 3.4.4 allows remote attackers to inject arbitrary HTTP headers via CRLF sequences in a URL.
- CVSS 3.0
- 6.1 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 9.89% probability · 95th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-113
- Affected
- python/python
- Source
- secalert@redhat.com
References
- http://blog.blindspotsecurity.com/2016/06/advisory-http-header-injection-in.htmlExploit, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html
- http://rhn.redhat.com/errata/RHSA-2016-1626.html
- http://rhn.redhat.com/errata/RHSA-2016-1627.html
- http://rhn.redhat.com/errata/RHSA-2016-1628.html
- http://rhn.redhat.com/errata/RHSA-2016-1629.html
- http://rhn.redhat.com/errata/RHSA-2016-1630.html
- http://www.openwall.com/lists/oss-security/2016/06/14/7Mailing List
- http://www.openwall.com/lists/oss-security/2016/06/15/12Mailing List
- http://www.openwall.com/lists/oss-security/2016/06/16/2Mailing List
- http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html
- http://www.securityfocus.com/bid/91226
- http://www.splunk.com/view/SP-CAAAPSV
- http://www.splunk.com/view/SP-CAAAPUE
- https://docs.python.org/3.4/whatsnew/changelog.html#python-3-4-4Release Notes
- https://hg.python.org/cpython/raw-file/v2.7.10/Misc/NEWSRelease Notes
- https://hg.python.org/cpython/rev/1c45047c5102Patch
- https://hg.python.org/cpython/rev/bf3e1c9b80e9Patch
- https://lists.debian.org/debian-lts-announce/2019/02/msg00011.html
- http://blog.blindspotsecurity.com/2016/06/advisory-http-header-injection-in.htmlExploit, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html
- http://rhn.redhat.com/errata/RHSA-2016-1626.html
- http://rhn.redhat.com/errata/RHSA-2016-1627.html
- http://rhn.redhat.com/errata/RHSA-2016-1628.html
- http://rhn.redhat.com/errata/RHSA-2016-1629.html
- http://rhn.redhat.com/errata/RHSA-2016-1630.html
- http://www.openwall.com/lists/oss-security/2016/06/14/7Mailing List
- http://www.openwall.com/lists/oss-security/2016/06/15/12Mailing List
- http://www.openwall.com/lists/oss-security/2016/06/16/2Mailing List
- http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.