CVE-2019-9947
CRLF injection is possible if the attacker controls a url parameter, as demonstrated by the first argument to urllib.request.urlopen with \r\n (specifically in the path component of a URL that lacks a ? character) followed by an HTTP header or a Redis…
Does this matter?
Lower severity and a low EPSS score (5.25%). Track it; it rarely justifies an emergency change on its own.
Description
An issue was discovered in urllib2 in Python 2.x through 2.7.16 and urllib in Python 3.x through 3.7.3. CRLF injection is possible if the attacker controls a url parameter, as demonstrated by the first argument to urllib.request.urlopen with \r\n (specifically in the path component of a URL that lacks a ? character) followed by an HTTP header or a Redis command. This is similar to the CVE-2019-9740 query string issue. This is fixed in: v2.7.17, v2.7.17rc1, v2.7.18, v2.7.18rc1; v3.5.10, v3.5.10rc1, v3.5.8, v3.5.8rc1, v3.5.8rc2, v3.5.9; v3.6.10, v3.6.10rc1, v3.6.11, v3.6.11rc1, v3.6.12, v3.6.9, v3.6.9rc1; v3.7.4, v3.7.4rc1, v3.7.4rc2, v3.7.5, v3.7.5rc1, v3.7.6, v3.7.6rc1, v3.7.7, v3.7.7rc1, v3.7.8, v3.7.8rc1, v3.7.9.
- CVSS 3.1
- 6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 5.25% probability · 92th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-93
- Affected
- python/python
- Source
- cve@mitre.org
References
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00062.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00063.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.htmlMailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/02/04/2Mailing List, Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:1260Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2030Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3335Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3520Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3725Third Party Advisory
- https://bugs.python.org/issue35906Exploit, Issue Tracking, Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2019/06/msg00022.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/06/msg00023.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/06/msg00026.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/07/msg00011.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/08/msg00034.htmlThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JMWSKTNOHSUOT3L25QFJAVCFYZX46FYK/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JXASHCDD4PQFKTMKQN4YOP5ZH366ABN4/
- https://security.gentoo.org/glsa/202003-26Third Party Advisory
- https://security.netapp.com/advisory/ntap-20190404-0004/Third Party Advisory
- https://usn.ubuntu.com/4127-1/Third Party Advisory
- https://usn.ubuntu.com/4127-2/Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00062.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00063.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.htmlMailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/02/04/2Mailing List, Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:1260Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2030Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3335Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3520Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3725Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.