CVE-2019-9947
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network without logging in, but needs a user to act. Limited direct impact.
- Exploit odds
- 5.3% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 5.3% in the next 30 days (EPSS).
- Severity: 6.1 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 5.3% · EPSS, next 30 days
- Weakness
- CWE-93
- Record status
- Modified
Affected
- Python < 2.7.17
- Python < 3.5.8
- Python < 3.6.9
- Python < 3.7.4
Attack profile CVSS 3.1 · 6.1
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2019-9947.md and follow it. Check whether this project is affected by CVE-2019-9947. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
References
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00062.html
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00063.html
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html
- http://www.openwall.com/lists/oss-security/2021/02/04/2
- https://access.redhat.com/errata/RHSA-2019:1260
- https://access.redhat.com/errata/RHSA-2019:2030
- https://access.redhat.com/errata/RHSA-2019:3335
- https://access.redhat.com/errata/RHSA-2019:3520
- https://access.redhat.com/errata/RHSA-2019:3725
- https://bugs.python.org/issue35906
- https://lists.debian.org/debian-lts-announce/2019/06/msg00022.html
- https://lists.debian.org/debian-lts-announce/2019/06/msg00023.html
- https://lists.debian.org/debian-lts-announce/2019/06/msg00026.html
- https://lists.debian.org/debian-lts-announce/2020/07/msg00011.html
- https://lists.debian.org/debian-lts-announce/2020/08/msg00034.html
- 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/202003-26
- https://security.netapp.com/advisory/ntap-20190404-0004/
- https://usn.ubuntu.com/4127-1/
- https://usn.ubuntu.com/4127-2/
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00062.html
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00063.html
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html
- http://www.openwall.com/lists/oss-security/2021/02/04/2