CVE-2019-20907

MEDIUM

Description

In Lib/tarfile.py in Python through 3.8.3, an attacker is able to craft a TAR archive leading to an infinite loop when opened by tarfile.open, because _proc_pax lacks header validation.

References

http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00051.html

http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00052.html

http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00053.html

http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00056.html

https://bugs.python.org/issue39017

https://github.com/python/cpython/pull/21454

https://lists.debian.org/debian-lts-announce/2020/08/msg00034.html

https://lists.debian.org/debian-lts-announce/2020/11/msg00032.html

https://lists.fedoraproject.org/archives/list/[email protected]/message/36XI3EEQNMHGOZEI63Y7UV6XZRELYEAU/

https://lists.fedoraproject.org/archives/list/[email protected]/message/CAXHCY4V3LPAAJOBCJ26ISZ4NUXQXTUZ/

https://lists.fedoraproject.org/archives/list/[email protected]/message/CNHPQGSP2YM3JAUD2VAMPXTIUQTZ2M2U/

https://lists.fedoraproject.org/archives/list/[email protected]/message/CTUNTBJ3POHONQOTLEZC46POCIYYTAKZ/

https://lists.fedoraproject.org/archives/list/[email protected]/message/LE4O3PNDNNOMSKHNUKZKD3NGHIFUFDPX/

https://lists.fedoraproject.org/archives/list/[email protected]/message/NTBKKOLFFNHG6CM4ACDX4APHSD5ZX5N4/

https://lists.fedoraproject.org/archives/list/[email protected]/message/OXI72HIHMXCQFWTULUXDG7VDA2BCYL4Y/

https://lists.fedoraproject.org/archives/list/[email protected]/message/PDKKRXLNVXRF6VGERZSR3OMQR5D5QI6I/

https://lists.fedoraproject.org/archives/list/[email protected]/message/TOGKLGTXZLHQQFBVCAPSUDA6DOOJFNRY/

https://lists.fedoraproject.org/archives/list/[email protected]/message/V3TALOUBYU2MQD4BPLRTDQUMBKGCAXUA/

https://lists.fedoraproject.org/archives/list/[email protected]/message/V53P2YOLEQH4J7S5QHXMKMZYFTVVMTMO/

https://lists.fedoraproject.org/archives/list/[email protected]/message/VT4AF72TJ2XNIKCR4WEBR7URBJJ4YZRD/

https://lists.fedoraproject.org/archives/list/[email protected]/message/YILCHHTNLH4GG4GSQBX2MZRKZBXOLCKE/

https://lists.fedoraproject.org/archives/list/package-announc[email protected]/message/YSL3XWVDMSMKO23HR74AJQ6VEM3C2NTS/

https://security.gentoo.org/glsa/202008-01

https://security.netapp.com/advisory/ntap-20200731-0002/

https://usn.ubuntu.com/4428-1/

Details

Source: MITRE

Published: 2020-07-13

Updated: 2020-11-19

Type: CWE-20

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:3.1/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