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)
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: 1.1
Type: local
Agent: unix
Published: 6/9/2023
Updated: 6/12/2023
Supported Sensors: Agentless 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-static, p-cpe:/a:amazon:linux:pcre-tools, cpe:/o:amazon:linux, p-cpe:/a:amazon:linux:pcre, p-cpe:/a:amazon:linux:pcre-debuginfo, p-cpe:/a:amazon:linux:pcre-devel
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