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Debian LTS Advisory ([SECURITY] [DLA 2020-1] libonig security update)

Information

Severity

Severity

Medium

Family

Family

Debian Local Security Checks

CVSSv2 Base

CVSSv2 Base

5.0

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:N/A:N

Solution Type

Solution Type

Vendor Patch

Created

Created

2 years ago

Modified

Modified

2 years ago

Summary

The remote host is missing an update for the 'libonig' package(s) announced via the DSA-2020-1 advisory.

Insight

Insight

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.

Affected Software

Affected Software

'libonig' package(s) on Debian Linux.

Detection Method

Detection Method

Checks if a vulnerable package version is present on the target host.

Solution

Solution

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.

Common Vulnerabilities and Exposures (CVE)

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multipass launch -c 2 -m 6G -d 20G -n mageni 20.04 && multipass shell mageni

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1. If you don’t have it already, install Brew. Then, to install Multipass simply execute:

brew install --cask multipass

2. Launch a multipass instance

multipass launch -c 2 -m 6G -d 20G -n mageni 20.04 && multipass shell mageni

2. Install Mageni

curl -sL https://www.mageni.net/installation | sudo bash

1. Download the installer for Windows

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2. Ensure your network is private

Make sure your local network is designated as private, otherwise Windows prevents Multipass from starting.

3. Run the installer

You need to allow the installer to gain Administrator privileges.

4. Launch a multipass instance

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5. Log into the multipass instance

multipass shell mageni

6. Install Mageni

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