Catastrophic backtracking vulnerability was found in Python. Exploitation of a regular expression in pop3lib's apop() method although limited by 2048 chars, can lead to denial of service. Upstream issue: https://bugs.python.org/issue32981
External References: https://docs.python.org/3.6/whatsnew/changelog.html#python-3-6-5-final
Created python33 tracking bugs for this issue: Affects: fedora-all [bug 1563465] Created python35 tracking bugs for this issue: Affects: fedora-all [bug 1563461] Created python34 tracking bugs for this issue: Affects: fedora-all [bug 1563463] Created python26 tracking bugs for this issue: Affects: fedora-all [bug 1563464] Created python3 tracking bugs for this issue: Affects: fedora-all [bug 1563462]
Acknowledgments: Name: the Python security response team
This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2018:3041 https://access.redhat.com/errata/RHSA-2018:3041
This issue has been addressed in the following products: Red Hat Software Collections for Red Hat Enterprise Linux 6 Red Hat Software Collections for Red Hat Enterprise Linux 7 Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS Via RHSA-2019:1260 https://access.redhat.com/errata/RHSA-2019:1260
This issue has been addressed in the following products: Red Hat Software Collections for Red Hat Enterprise Linux 7 Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS Red Hat Software Collections for Red Hat Enterprise Linux 6 Via RHSA-2019:3725 https://access.redhat.com/errata/RHSA-2019:3725
This issue has been addressed in the following products: Red Hat Enterprise Linux 7.5 Extended Update Support Via RHSA-2020:1268 https://access.redhat.com/errata/RHSA-2020:1268
This issue has been addressed in the following products: Red Hat Enterprise Linux 7.4 Advanced Update Support Red Hat Enterprise Linux 7.4 Telco Extended Update Support Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions Via RHSA-2020:1346 https://access.redhat.com/errata/RHSA-2020:1346