CVE-2019-20454
CVSS V2 Medium 5
CVSS V3 High 7.5
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.
Overview
- CVE ID
- CVE-2019-20454
- Assigner
- cve@mitre.org
- Vulnerability Status
- Modified
- Published Version
- 2020-02-14T14:15:10
- Last Modified Date
- 2023-03-16T05:15:50
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:pcre:pcre2:*:*:*:*:*:*:*:* | 1 | OR | 10.31 | 10.34 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:N/I:N/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- NONE
- Availability Impact
- PARTIAL
- Base Score
- 5
- Severity
- MEDIUM
- Exploitability Score
- 10
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 7.5
- Base Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| https://bugs.exim.org/show_bug.cgi?id=2421 | Issue Tracking Permissions Required Third Party Advisory |
| https://bugs.php.net/bug.php?id=78338 | Exploit Issue Tracking Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=1735494 | Issue Tracking Patch Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2023/03/msg00014.html | |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OQRAHYHLRNMBTPR3KXVM27NSZP3KTOPI/ | Mailing List Third Party Advisory |
| https://security.gentoo.org/glsa/202006-16 | Third Party Advisory |
| https://vcs.pcre.org/pcre2?view=revision&revision=1092 | Broken Link Patch |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2019-20454 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20454 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 16:41:13 | Added to TrackCVE | |||
| 2022-12-04 11:22:38 | 2020-02-14T14:15Z | 2020-02-14T14:15:10 | CVE Published Date | updated |
| 2022-12-04 11:22:38 | 2020-07-09T03:15:10 | CVE Modified Date | updated | |
| 2022-12-04 11:22:38 | Undergoing Analysis | Vulnerability Status | updated | |
| 2023-01-27 19:09:49 | 2023-01-27T18:25:19 | CVE Modified Date | updated | |
| 2023-01-27 19:09:49 | Undergoing Analysis | Analyzed | Vulnerability Status | updated |
| 2023-03-16 06:09:53 | 2023-03-16T05:15:50 | CVE Modified Date | updated | |
| 2023-03-16 06:09:53 | Analyzed | Modified | Vulnerability Status | updated |
| 2023-03-16 06:09:54 | References | updated |