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.
Exploits (1)
References (8)
Core 8
Core References
Third Party Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:3520
Third Party Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:3725
Mailing List, Third Party Advisory vendor-advisory
x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html
Third Party Advisory vendor-advisory
x_refsource_gentoo
https://security.gentoo.org/glsa/202003-26
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2020/07/msg00011.html
Mailing List mailing-list
x_refsource_mlist
https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.apache.org%3E
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2020/08/msg00034.html
Exploit, Third Party Advisory x_refsource_misc
https://talosintelligence.com/vulnerability_reports/TALOS-2019-0758
Scores
CVSS v3
7.5
EPSS
0.0536
EPSS Percentile
90.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-476
Status
published
Products (14)
debian/debian_linux
9.0
opensuse/leap
15.1
python/python
2.7.0 - 2.7.16
redhat/enterprise_linux
8.0
redhat/enterprise_linux_eus
8.1
redhat/enterprise_linux_eus
8.2
redhat/enterprise_linux_eus
8.4
redhat/enterprise_linux_eus
8.6
redhat/enterprise_linux_server_aus
8.2
redhat/enterprise_linux_server_aus
8.4
... and 4 more
Published
Oct 31, 2019
Tracked Since
Feb 18, 2026