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CVE-2019-5010

HIGH
7.5
CVSS Score
Published: October 31, 2019 at 08:05 PM UTC
Updated: October 7, 2026 at 07:17 PM UTC
7 products affected across 4 vendorsDebian LinuxEnterprise LinuxLeap

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Severity
HIGH7.5
Exploit prediction
EPSS 21%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Debian Linux· Debiandrupal
95%
9.0
Leap· openSUSEdrupal
95%
15.1
Python· Python
95%
2.7.0 ≤ v < 2.7.163.4.0 ≤ v < 3.4.103.5.0 ≤ v < 3.5.73.6.0 ≤ v < 3.6.93.7.0 ≤ v < 3.7.3*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
Affected range stops below 2.7.16, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.4.10, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.5.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.6.9, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.7.3, so it looks safe — our inference, not a vendor statement
Enterprise Linux· Red Hatrpm
95%
8.0
Enterprise Linux Eus· Red Hatrpm
95%
8.18.28.48.6
Enterprise Linux Server Aus· Red Hatrubygems
95%
8.28.48.6
Enterprise Linux Server Tus· Red Hatrubygems
95%
8.28.48.6

References (8)

Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html
Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2019:3520
Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2019:3725
Mailing Listx_refsource_MLIST
Source: [email protected]
https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.apache.org%3E
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2020/07/msg00011.html
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2020/08/msg00034.html
Vendor Advisoryx_refsource_GENTOOThird Party Advisory
Source: [email protected]
https://security.gentoo.org/glsa/202003-26
x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://talosintelligence.com/vulnerability_reports/TALOS-2019-0758

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-476

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