Detections
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Amazon Linux AMI : pcre (ALAS-2023-1767)
critical Nessus Plugin ID 177072
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Synopsis
The remote Amazon Linux AMI host is missing a security update.Description
The version of pcre installed on the remote host is prior to 8.21-7.9. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS-2023-1767 advisory.Heap-based buffer overflow in the find_fixedlength function in pcre_compile.c in PCRE before 8.38 allows remote attackers to cause a denial of service (crash) or obtain sensitive information from heap memory and possibly bypass the ASLR protection mechanism via a crafted regular expression with an excess closing parenthesis. (CVE-2015-5073)
PCRE before 8.38 mishandles the [: and \ substrings in character classes, which allows remote attackers to cause a denial of service (uninitialized memory read) or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror.
(CVE-2015-8390)
PCRE before 8.38 mishandles the (?(<digits>) and (?(R<digits>) conditions, which allows remote attackers to cause a denial of service (integer overflow) or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror.
(CVE-2015-8394)
Tenable has extracted the preceding description block directly from the tested product security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Run 'yum update pcre' to update your system.See Also
https://alas.aws.amazon.com/ALAS-2023-1767.html
https://alas.aws.amazon.com/cve/html/CVE-2015-5073.html
https://alas.aws.amazon.com/cve/html/CVE-2015-8390.html
Plugin Details
Severity: Critical
ID: 177072
File Name: ala_ALAS-2023-1767.nasl
Version: 1.2
Type: local
Agent: unix
Published: 6/9/2023
Updated: 12/11/2024
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.0
CVSS v2
Risk Factor: High
Base Score: 7.5
Temporal Score: 5.9
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS Score Source: CVE-2015-8394
CVSS v3
Risk Factor: Critical
Base Score: 9.8
Temporal Score: 8.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:amazon:linux:pcre-tools, p-cpe:/a:amazon:linux:pcre-debuginfo, p-cpe:/a:amazon:linux:pcre, cpe:/o:amazon:linux, p-cpe:/a:amazon:linux:pcre-devel, p-cpe:/a:amazon:linux:pcre-static
Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 6/5/2023
Vulnerability Publication Date: 6/26/2015