CVE-2019-20454
PCRE Out-of-Bounds Read Vulnerability
Description
An out-of-bounds read was discovered in PCRE before 10.34 when the pattern \X is JIT compiled and used to match specially crafted subjects in non-UTF mode. Applications that use PCRE to parse untrusted input may be vulnerable to this flaw, which would allow an attacker to crash the application. The flaw occurs in do_extuni_no_utf in pcre2_jit_compile.c.
INFO
Published Date :
Feb. 14, 2020, 2:15 p.m.
Last Modified :
Nov. 21, 2024, 4:38 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Affected Products
The following products are affected by CVE-2019-20454
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2019-20454.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2019-20454 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2019-20454 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://bugs.exim.org/show_bug.cgi?id=2421 Added Reference https://bugs.php.net/bug.php?id=78338 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=1735494 Added Reference https://lists.debian.org/debian-lts-announce/2023/03/msg00014.html Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OQRAHYHLRNMBTPR3KXVM27NSZP3KTOPI/ Added Reference https://security.gentoo.org/glsa/202006-16 Added Reference https://vcs.pcre.org/pcre2?view=revision&revision=1092 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Mar. 27, 2024
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2023/03/msg00014.html No Types Assigned https://lists.debian.org/debian-lts-announce/2023/03/msg00014.html Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OQRAHYHLRNMBTPR3KXVM27NSZP3KTOPI/ No Types Assigned https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OQRAHYHLRNMBTPR3KXVM27NSZP3KTOPI/ Mailing List, Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:* versions from (including) 8.2.0 up to (excluding) 8.2.12 *cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:* versions from (including) 9.0.0 up to (excluding) 9.0.6 *cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OQRAHYHLRNMBTPR3KXVM27NSZP3KTOPI/ [No types assigned] Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/OQRAHYHLRNMBTPR3KXVM27NSZP3KTOPI/ -
CVE Modified by [email protected]
Mar. 16, 2023
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2023/03/msg00014.html [No Types Assigned] -
Modified Analysis by [email protected]
Jan. 27, 2023
Action Type Old Value New Value Changed Reference Type https://bugs.exim.org/show_bug.cgi?id=2421 Issue Tracking, Third Party Advisory https://bugs.exim.org/show_bug.cgi?id=2421 Issue Tracking, Permissions Required, Third Party Advisory Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1735494 Issue Tracking, Patch https://bugzilla.redhat.com/show_bug.cgi?id=1735494 Issue Tracking, Patch, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/OQRAHYHLRNMBTPR3KXVM27NSZP3KTOPI/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/OQRAHYHLRNMBTPR3KXVM27NSZP3KTOPI/ Mailing List, Third Party Advisory Changed Reference Type https://security.gentoo.org/glsa/202006-16 No Types Assigned https://security.gentoo.org/glsa/202006-16 Third Party Advisory Changed Reference Type https://vcs.pcre.org/pcre2?view=revision&revision=1092 Patch https://vcs.pcre.org/pcre2?view=revision&revision=1092 Broken Link, Patch Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Jul. 09, 2020
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/OQRAHYHLRNMBTPR3KXVM27NSZP3KTOPI/ [No Types Assigned] -
CVE Modified by [email protected]
Jun. 15, 2020
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/202006-16 [No Types Assigned] -
Reanalysis by [email protected]
Feb. 26, 2020
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:pcre:pcre:*:*:*:*:*:*:*:* versions up to (excluding) 10.34 OR *cpe:2.3:a:pcre:pcre2:*:*:*:*:*:*:*:* versions from (including) 10.31 up to (excluding) 10.34 -
Initial Analysis by [email protected]
Feb. 25, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://bugs.exim.org/show_bug.cgi?id=2421 No Types Assigned https://bugs.exim.org/show_bug.cgi?id=2421 Issue Tracking, Third Party Advisory Changed Reference Type https://bugs.php.net/bug.php?id=78338 No Types Assigned https://bugs.php.net/bug.php?id=78338 Exploit, Issue Tracking, Third Party Advisory Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1735494 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1735494 Issue Tracking, Patch Changed Reference Type https://vcs.pcre.org/pcre2?view=revision&revision=1092 No Types Assigned https://vcs.pcre.org/pcre2?view=revision&revision=1092 Patch Added CWE NIST CWE-125 Added CPE Configuration OR *cpe:2.3:a:pcre:pcre:*:*:*:*:*:*:*:* versions up to (excluding) 10.34
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2019-20454 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2019-20454
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.14 }} -0.01%
score
0.49995
percentile