CVE-2018-1060

python: DOS via regular expression catastrophic backtracking in apop() method in pop3lib

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

python before versions 2.7.15, 3.4.9, 3.5.6rc1, 3.6.5rc1 and 3.7.0 is vulnerable to catastrophic backtracking in pop3lib's apop() method. An attacker could use this flaw to cause denial of service.

Python antes de las versiones 2.7.15, 3.4.9, 3.5.6rc1, 3.6.5rc1 y 3.7.0 es vulnerable a un retroceso catastrófico en el método apop () de pop3lib. Un atacante podría usar este fallo para causar la denegación de servicio.

A flaw was found in the way catastrophic backtracking was implemented in python's pop3lib's apop() method. An attacker could use this flaw to cause denial of service.

An update that solves 26 vulnerabilities and has 30 fixes is now available. This update for python3 to version 3.6.10 fixes the following issues. Fixed a denial of service in Wave_read._read_fmt_chunk. Fixed an issue where email parsing could fail for multiple @. Fixed a heap-based buffer over-read in libexpat. This update was imported from the SUSE:SLE-15:Update update project.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-12-04 CVE Reserved
2018-05-05 CVE Published
2024-08-05 CVE Updated
2024-08-05 First Exploit
2025-06-06 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-20: Improper Input Validation

CAPEC

References (24)

URL	Tag	Source
http://www.securitytracker.com/id/1042001	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1060	Issue Tracking
https://lists.debian.org/debian-lts-announce/2018/09/msg00030.html	Mailing List
https://lists.debian.org/debian-lts-announce/2018/09/msg00031.html	Mailing List
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbst03951en_us	Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2020.html	Third Party Advisory

URL	Date	SRC
https://bugs.python.org/issue32981	2024-08-05

URL	Date	SRC

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html	2023-11-07
https://access.redhat.com/errata/RHBA-2019:0327	2023-11-07
https://access.redhat.com/errata/RHSA-2018:3041	2023-11-07
https://access.redhat.com/errata/RHSA-2018:3505	2023-11-07
https://access.redhat.com/errata/RHSA-2019:1260	2023-11-07
https://access.redhat.com/errata/RHSA-2019:3725	2023-11-07
https://docs.python.org/3.5/whatsnew/changelog.html#python-3-5-6-release-candidate-1	2023-11-07
https://docs.python.org/3.6/whatsnew/changelog.html#python-3-6-5-release-candidate-1	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/46PVWY5LFP4BRPG3BVQ5QEEFYBVEXHCK	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AEZ5IQT7OF7Q2NCGIVABOWYGKO7YU3NJ	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JSKPGPZQNTAULHW4UH63KGOOUIDE4RRB	2023-11-07
https://usn.ubuntu.com/3817-1	2023-11-07
https://usn.ubuntu.com/3817-2	2023-11-07
https://www.debian.org/security/2018/dsa-4306	2023-11-07
https://www.debian.org/security/2018/dsa-4307	2023-11-07
https://access.redhat.com/security/cve/CVE-2018-1060	2020-04-07
https://bugzilla.redhat.com/show_bug.cgi?id=1549191	2020-04-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				>= 2.7.0 < 2.7.15 Search vendor "Python" for product "Python" and version " >= 2.7.0 < 2.7.15"		-		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				>= 3.0.0 < 3.4.9 Search vendor "Python" for product "Python" and version " >= 3.0.0 < 3.4.9"		-		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				>= 3.5.0 < 3.5.6 Search vendor "Python" for product "Python" and version " >= 3.5.0 < 3.5.6"		-		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				> 3.6.0 < 3.6.5 Search vendor "Python" for product "Python" and version " > 3.6.0 < 3.6.5"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				28 Search vendor "Fedoraproject" for product "Fedora" and version "28"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				29 Search vendor "Fedoraproject" for product "Fedora" and version "29"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				30 Search vendor "Fedoraproject" for product "Fedora" and version "30"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				12.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "12.04"		esm		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04"		lts		Affected
Redhat Search vendor "Redhat"		Ansible Tower Search vendor "Redhat" for product "Ansible Tower"				3.3 Search vendor "Redhat" for product "Ansible Tower" and version "3.3"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Desktop Search vendor "Redhat" for product "Enterprise Linux Desktop"				7.0 Search vendor "Redhat" for product "Enterprise Linux Desktop" and version "7.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Search vendor "Redhat" for product "Enterprise Linux Server"				7.0 Search vendor "Redhat" for product "Enterprise Linux Server" and version "7.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Workstation Search vendor "Redhat" for product "Enterprise Linux Workstation"				7.0 Search vendor "Redhat" for product "Enterprise Linux Workstation" and version "7.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected