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ubuntucveUbuntu.comUB:CVE-2020-28493
HistoryFeb 01, 2021 - 12:00 a.m.

CVE-2020-28493

2021-02-0100:00:00
ubuntu.com
ubuntu.com
20
cve-2020-28493
jinja2
redos
vulnerability
markdown
user content
request timeouts

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

5.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS

0.002

Percentile

57.3%

JSON

This affects the package jinja2 from 0.0.0 and before 2.11.3. The ReDoS
vulnerability is mainly due to the _punctuation_re regex operator and its
use of multiple wildcards. The last wildcard is the most exploitable as it
searches for trailing punctuation. This issue can be mitigated by Markdown
to format user content instead of the urlize filter, or by implementing
request timeouts and limiting process memory.

Notes

Author Note
sbeattie regular expression DoS
OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchjinja2< 2.10-1ubuntu0.18.04.1+esm1UNKNOWN
ubuntu20.04noarchjinja2< 2.10.1-2ubuntu0.2UNKNOWN
ubuntu14.04noarchjinja2< 2.7.2-2ubuntu0.1~esm2UNKNOWN
ubuntu16.04noarchjinja2< 2.8-1ubuntu0.1+esm1UNKNOWN

Related

nessus 36
fedora 1
openvas 18
alpinelinux 1
redhatcve 1
ibm 7
cve 1
nvd 1
gitlab 1
osv 13
rocky 3
redhat 9
ubuntu 2
gentoo 1
archlinux 2
prion 1
veracode 1
debiancve 1
github 1
mageia 1
cvelist 1
cbl_mariner 1
almalinux 3
oraclelinux 2
oracle 1
nessus
nessus
CentOS 8 : python-jinja2 (CESA-2021:4161)
2021-11-11 00:00:00
Rocky Linux 8 : python-jinja2 (RLSA-2021:4161)
2023-11-07 00:00:00
EulerOS 2.0 SP9 : python-jinja2 (EulerOS-SA-2021-2538)
2021-09-27 00:00:00
fedora
fedora
[SECURITY] Fedora 33 Update: mingw-python-jinja2-2.11.3-1.fc33
2021-03-15 01:19:56
openvas
openvas
Huawei EulerOS: Security Advisory for python-jinja2 (EulerOS-SA-2021-2609)
2021-10-26 00:00:00
SUSE: Security Advisory (SUSE-SU-2021:14644-1)
2021-06-09 00:00:00
Huawei EulerOS: Security Advisory for python-jinja2 (EulerOS-SA-2021-2482)
2021-09-24 00:00:00
alpinelinux
alpinelinux
CVE-2020-28493
2021-02-01 20:15:12
redhatcve
redhatcve
CVE-2020-28493
2021-02-15 12:33:42
ibm
ibm
Security Bulletin: IBM Security QRadar Network Threat Analytics uses component jinja2 with a denial of service vulnerability (CVE-2020-28493)
2022-09-16 15:41:17
Security Bulletin: IBM QRadar Advisor With Watson uses components with known vulnerabilities (CVE-2020-36242, CVE-2021-33503, CVE-2020-28493)
2021-10-20 19:08:49
Security Bulletin: IBM QRadar Assistant App for IBM QRadar SIEM is vulnerable to using components with known vulnerabilities
2024-04-29 16:48:58
cve
cve
CVE-2020-28493
2021-02-01 20:15:12
nvd
nvd
CVE-2020-28493
2021-02-01 20:15:12
gitlab
gitlab
Regular Expression Denial of Service
2021-02-01 00:00:00
osv
osv
CVE-2020-28493
2021-02-01 20:15:12
Regular Expression Denial of Service (ReDoS) in Jinja2
2021-03-19 21:28:05
PYSEC-2021-66
2021-02-01 20:15:00
rocky
rocky
python-jinja2 security update
2021-11-09 08:26:43
python27:2.7 security update
2021-11-09 08:24:39
python38:3.8 and python38-devel:3.8 security update
2021-11-09 12:47:54
redhat
redhat
(RHSA-2021:4161) Moderate: python-jinja2 security update
2021-11-09 08:26:43
(RHSA-2021:3252) Moderate: python27 security update
2021-08-24 07:29:51
(RHSA-2021:4151) Moderate: python27:2.7 security update
2021-11-09 08:24:39
ubuntu
ubuntu
Jinja2 vulnerability
2022-10-26 00:00:00
Jinja2 vulnerabilities
2024-01-25 00:00:00
gentoo
gentoo
Jinja: Denial of service
2021-07-08 00:00:00
archlinux
archlinux
[ASA-202102-19] python-jinja: denial of service
2021-02-07 00:00:00
[ASA-202102-20] python2-jinja: denial of service
2021-02-07 00:00:00
prion
prion
Design/Logic Flaw
2021-02-01 20:15:00
veracode
veracode
Regular Expression Denial Of Service (ReDoS)
2021-02-02 01:28:40
debiancve
debiancve
CVE-2020-28493
2021-02-01 20:15:12
github
github
Regular Expression Denial of Service (ReDoS) in Jinja2
2021-03-19 21:28:05
mageia
mageia
Updated python-jinja2 packages fix a security vulnerability
2021-04-12 22:59:59
cvelist
cvelist
CVE-2020-28493 Regular Expression Denial of Service (ReDoS)
2021-02-01 19:30:16
cbl_mariner
cbl_mariner
CVE-2020-28493 affecting package python-jinja2 2.10.1-1
2022-08-12 16:45:07
almalinux
almalinux
Moderate: python-jinja2 security update
2021-11-09 08:26:43
Moderate: python27:2.7 security update
2021-11-09 08:24:39
Moderate: python38:3.8 and python38-devel:3.8 security update
2021-11-09 12:47:54
oraclelinux
oraclelinux
python27:2.7 security update
2021-11-16 00:00:00
python38:3.8 and python38-devel:3.8 security update
2021-11-16 00:00:00
oracle
oracle
Oracle Critical Patch Update Advisory - October 2023
2023-10-17 00:00:00

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

5.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS

0.002

Percentile

57.3%

JSON
Related for UB:CVE-2020-28493
nessus36fedora1openvas18alpinelinux1redhatcve1ibm7cve1nvd1gitlab1osv13rocky3redhat9ubuntu2gentoo1archlinux2prion1veracode1debiancve1github1mageia1cvelist1cbl_mariner1almalinux3oraclelinux2oracle1