CVE-2018-20406

MEDIUM

Description

Modules/_pickle.c in Python before 3.7.1 has an integer overflow via a large LONG_BINPUT value that is mishandled during a "resize to twice the size" attempt. This issue might cause memory exhaustion, but is only relevant if the pickle format is used for serializing tens or hundreds of gigabytes of data. This issue is fixed in: v3.4.10, v3.4.10rc1; v3.5.10, v3.5.10rc1, v3.5.7, v3.5.7rc1, 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, v3.6.7, v3.6.7rc1, v3.6.7rc2, v3.6.8, v3.6.8rc1, v3.6.9, v3.6.9rc1; v3.7.1, v3.7.1rc1, v3.7.1rc2, v3.7.2, v3.7.2rc1, v3.7.3, v3.7.3rc1, 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.

References

http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html

https://access.redhat.com/errata/RHSA-2019:3725

https://bugs.python.org/issue34656

https://github.com/python/cpython/commit/a4ae828ee416a66d8c7bf5ee71d653c2cc6a26dd

https://lists.debian.org/debian-lts-announce/2019/02/msg00011.html

https://lists.debian.org/debian-lts-announce/2020/07/msg00011.html

https://lists.fedoraproject.org/archives/list/[email protected]/message/46PVWY5LFP4BRPG3BVQ5QEEFYBVEXHCK/

https://lists.fedoraproject.org/archives/list/[email protected]/message/AEZ5IQT7OF7Q2NCGIVABOWYGKO7YU3NJ/

https://lists.fedoraproject.org/archives/list/[email protected]/message/D3LXPABKVLFYUHRYJPM3CSS5MS6FXKS7/

https://lists.fedoraproject.org/archives/list/[email protected]/message/ICBEGRHIPHWPG2VGYS6R4EVKVUUF4AQW/

https://lists.fedoraproject.org/archives/list/[email protected]/message/JSKPGPZQNTAULHW4UH63KGOOUIDE4RRB/

https://lists.fedoraproject.org/archives/list/[email protected]/message/TR6GCO3WTV4D5L23WTCBF275VE6BVNI3/

https://security.netapp.com/advisory/ntap-20190416-0010/

https://usn.ubuntu.com/4127-1/

https://usn.ubuntu.com/4127-2/

Details

Source: MITRE

Published: 2018-12-23

Updated: 2020-10-29

Type: CWE-190

Risk Information

CVSS v2.0

Base Score: 5

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3.0

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH