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Debian DLA-2020-1 : libonig security update
critical Nessus Plugin ID 131705
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Synopsis
The remote Debian host is missing a security update.Description
Several vulnerabilities were discovered in the Oniguruma regular expressions library, notably used in PHP mbstring.CVE-2019-19012
An integer overflow in the search_in_range function in regexec.c leads to an out-of-bounds read, in which the offset of this read is under the control of an attacker. (This only affects the 32-bit compiled version). Remote attackers can cause a denial of service or information disclosure, or possibly have unspecified other impact, via a crafted regular expression.
CVE-2019-19204
In the function fetch_range_quantifier in regparse.c, PFETCH is called without checking PEND. This leads to a heap-based buffer over-read and lead to denial of service via a crafted regular expression.
CVE-2019-19246
Heap-based buffer over-read in str_lower_case_match in regexec.c can lead to denial of service via a crafted regular expression.
For Debian 8 'Jessie', these problems have been fixed in version 5.9.5-3.2+deb8u4.
We recommend that you upgrade your libonig packages.
NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
Solution
Upgrade the affected libonig-dev, libonig2, and libonig2-dbg packages.See Also
https://lists.debian.org/debian-lts-announce/2019/12/msg00002.html
Plugin Details
Severity: Critical
ID: 131705
File Name: debian_DLA-2020.nasl
Version: 1.5
Type: local
Agent: unix
Family: Debian Local Security Checks
Published: 12/5/2019
Updated: 4/5/2024
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
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-2019-19012
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:debian:debian_linux:libonig2-dbg, cpe:/o:debian:debian_linux:8.0, p-cpe:/a:debian:debian_linux:libonig-dev, p-cpe:/a:debian:debian_linux:libonig2
Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 12/4/2019
Vulnerability Publication Date: 11/17/2019