CVE-2019-9740
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 query string after a ? character) followed by an HTTP header or a Redis command.
Does this matter?
Lower severity and a low EPSS score (5.33%). 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 query string after a ? character) followed by an HTTP header or a Redis command. 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
- 5.33% 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/2019-09/msg00039.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00041.htmlMailing List, Third Party Advisory
- http://packetstormsecurity.com/files/154927/Slackware-Security-Advisory-python-Updates.htmlThird Party Advisory, VDB Entry
- http://www.openwall.com/lists/oss-security/2021/02/04/2Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/107466Third Party Advisory, VDB Entry
- 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/issue36276Exploit, Issue Tracking, 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.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2ORNTF62QPLMJXIQ7KTZQ2776LMIXEKL/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/44TS66GJMO5H3RLMVZEBGEFTB6O2LJJU/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4X3HW5JRZ7GCPSR7UHJOLD7AWLTQCDVR/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JCPGLTTOBB3QEARDX4JOYURP6ELNNA2V/
- 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://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M34WOYCDKTDE5KLUACE2YIEH7D37KHRX/
- https://seclists.org/bugtraq/2019/Oct/29Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202003-26Third Party Advisory
- https://security.netapp.com/advisory/ntap-20190619-0005/Third Party Advisory
- https://usn.ubuntu.com/4127-1/Third Party Advisory
- https://usn.ubuntu.com/4127-2/Third Party Advisory
- https://www.oracle.com/security-alerts/cpujul2022.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00039.htmlMailing List, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.