Description
An exploitable denial-of-service vulnerability exists in the X509 certificate parser of Python.org Python 2.7.11 / 3.6.6. A specially crafted X509 certificate can cause a NULL pointer dereference, resulting in a denial of service. An attacker can initiate or accept TLS connections using crafted certificates to trigger this vulnerability.
Metrics
CVSS 3.1 7.5/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | Python | Python.org CPython 2.7.11 Python.org CPython 3.6.6 Python.org CPython 3.5.2 Python.org CPython 3 master at 480833808e918a1dcebbbcfd07d5a8de3c5c2a66 |
References
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.htmlMailing List, Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3520Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3725Third Party Advisory
- https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.apache.org%3E
- 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://security.gentoo.org/glsa/202003-26Third Party Advisory
- https://talosintelligence.com/vulnerability_reports/TALOS-2019-0758Exploit, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.htmlMailing List, Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3520Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3725Third Party Advisory
- https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.apache.org%3E
- 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://security.gentoo.org/glsa/202003-26Third Party Advisory
- https://talosintelligence.com/vulnerability_reports/TALOS-2019-0758Exploit, Third Party Advisory
Timeline
- Published
- Oct 31, 2019
- Last modified
- Oct 7, 2026
- NVD status
- Modified