CVE-2020-29651
published 2020-12-09CVE-2020-29651: A denial of service via regular expression in the py.path.svnwc component of py (aka python-py) through 1.9.0 could be used by attackers to cause a…
PriorityP338high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
4.61%
90.6th percentile
A denial of service via regular expression in the py.path.svnwc component of py (aka python-py) through 1.9.0 could be used by attackers to cause a compute-time denial of service attack by supplying malicious input to the blame functionality.
Affected
8 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | pypy3 | < pypy3 7.3.5+dfsg-2+deb11u4 (bullseye) | pypy3 7.3.5+dfsg-2+deb11u4 (bullseye) |
| debian | python-py | < pypy3 7.3.5+dfsg-2+deb11u4 (bullseye) | pypy3 7.3.5+dfsg-2+deb11u4 (bullseye) |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| msrc | cm1_python-py_1.10.0-1_on_cbl_mariner_1.0 | — | — |
| oracle | zfs_storage_appliance_kit | — | — |
| pytest | py | <= 1.9.0 | — |
| pytest | py | >= 0 < 1.10.0 | 1.10.0 |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
osv7.5HIGH
vendor_debian7.5HIGH
vendor_msrc7.5HIGH
vendor_redhat7.5HIGH
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Ubuntu
python-py vulnerability
vendor_ubuntu·2021-11-10
CVE-2020-29651 python-py vulnerability
Title: python-py vulnerability
Summary: python-py could be made to crash if provided with specially crafted input.
The py.path.svnwc component of py (aka python-py) through v1.9.0 contains
a regular expression with an ambiguous subpattern that is susceptible to
catastrophic backtracing. This could be used by attackers to cause a compute-time
denial of service attack by supplying malicious input to the blame functionality.
Instructions: In general, a standard system update will make all the necessary changes.
Microsoft
A denial of service via regular expression in the py.path.svnwc component of py (aka python-py) through 1.9.0 could be used by attackers to cause a compute-time denial of service attack by supplying m
vendor_msrc·2020-12-08·CVSS 7.5
CVE-2020-29651 [HIGH] A denial of service via regular expression in the py.path.svnwc component of py (aka python-py) through 1.9.0 could be used by attackers to cause a compute-time denial of service attack by supplying m
A denial of service via regular expression in the py.path.svnwc component of py (aka python-py) through 1.9.0 could be used by attackers to cause a compute-time denial of service attack by supplying malicious input to the blame functionality.
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional
Red Hat
python-py: ReDoS in the py.path.svnwc component via mailicious input to blame functionality
vendor_redhat·2020-09-03·CVSS 7.5
CVE-2020-29651 [HIGH] CWE-20 python-py: ReDoS in the py.path.svnwc component via mailicious input to blame functionality
python-py: ReDoS in the py.path.svnwc component via mailicious input to blame functionality
A denial of service via regular expression in the py.path.svnwc component of py (aka python-py) through 1.9.0 could be used by attackers to cause a compute-time denial of service attack by supplying malicious input to the blame functionality.
Statement: In Red Hat OpenStack Platform, because the flaw has a lower impact and the fix would require a substantial amount of development, no update will be provided at this time for the RHOSP python-py package.
Package: python-py (Red Hat Enterprise Linux 7) - Out of support scope
Package: python27:2.7/python-py (Red Hat Enterprise Linux 8) - Fix deferred
Package: python-py (Red Hat Enterprise Linux 8) - Fix deferred
Package: python-py (Red Hat Enterpr
Debian
CVE-2020-29651: pypy3 - A denial of service via regular expression in the py.path.svnwc component of py ...
vendor_debian·2020·CVSS 7.5
CVE-2020-29651 [HIGH] CVE-2020-29651: pypy3 - A denial of service via regular expression in the py.path.svnwc component of py ...
A denial of service via regular expression in the py.path.svnwc component of py (aka python-py) through 1.9.0 could be used by attackers to cause a compute-time denial of service attack by supplying malicious input to the blame functionality.
Scope: local
bullseye: resolved (fixed in 7.3.5+dfsg-2+deb11u4)
OSV
py vulnerable to Regular Expression Denial of Service
osv·2021-04-20
CVE-2020-29651 [HIGH] py vulnerable to Regular Expression Denial of Service
py vulnerable to Regular Expression Denial of Service
A denial of service via regular expression in the py.path.svnwc component of py (aka python-py) through 1.9.0 could be used by attackers to cause a compute-time denial of service attack by supplying malicious input to the blame functionality.
GHSA
py vulnerable to Regular Expression Denial of Service
ghsa·2021-04-20
CVE-2020-29651 [HIGH] CWE-400 py vulnerable to Regular Expression Denial of Service
py vulnerable to Regular Expression Denial of Service
A denial of service via regular expression in the py.path.svnwc component of py (aka python-py) through 1.9.0 could be used by attackers to cause a compute-time denial of service attack by supplying malicious input to the blame functionality.
OSV
CVE-2020-29651: A denial of service via regular expression in the py
osv·2020-12-09·CVSS 7.5
CVE-2020-29651 [HIGH] CVE-2020-29651: A denial of service via regular expression in the py
A denial of service via regular expression in the py.path.svnwc component of py (aka python-py) through 1.9.0 could be used by attackers to cause a compute-time denial of service attack by supplying malicious input to the blame functionality.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://github.com/pytest-dev/py/issues/256https://github.com/pytest-dev/py/pull/257https://github.com/pytest-dev/py/pull/257/commits/4a9017dc6199d2a564b6e4b0aa39d6d8870e4144https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AYWNYEV3FGDHPIHX4DDUDMFZ6NLCQRC4/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CHDTINIBJZ67T3W74QTBIY5LPKAXEOGR/https://www.oracle.com/security-alerts/cpujul2022.htmlhttps://github.com/pytest-dev/py/issues/256https://github.com/pytest-dev/py/pull/257https://github.com/pytest-dev/py/pull/257/commits/4a9017dc6199d2a564b6e4b0aa39d6d8870e4144https://lists.debian.org/debian-lts-announce/2024/11/msg00024.htmlhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AYWNYEV3FGDHPIHX4DDUDMFZ6NLCQRC4/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CHDTINIBJZ67T3W74QTBIY5LPKAXEOGR/https://www.oracle.com/security-alerts/cpujul2022.html
2020-12-09
Published