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Debian LTS: Security Advisory for libarchive (DLA-2987-1)

Information

Severity

Severity

Low

Family

Family

Debian Local Security Checks

CVSSv2 Base

CVSSv2 Base

2.1

CVSSv2 Vector

CVSSv2 Vector

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

Solution Type

Solution Type

Vendor Patch

Created

Created

3 weeks ago

Modified

Modified

3 weeks ago

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Summary

The remote host is missing an update for the 'libarchive' package(s) announced via the DLA-2987-1 advisory.

Insight

Insight

Three issues have been found in libarchive, a multi-format archive and compression library. CVE-2021-31566 symbolic links incorrectly followed when changing modes, times, ACL and flags of a file while extracting an archive CVE-2021-23177 extracting a symlink with ACLs modifies ACLs of target CVE-2019-19221 out-of-bounds read because of an incorrect mbrtowc or mbtowc call

Affected Software

Affected Software

'libarchive' 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 9 stretch, these problems have been fixed in version 3.2.2-2+deb9u3. We recommend that you upgrade your libarchive packages.

Common Vulnerabilities and Exposures (CVE)

References

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Citations 1. Costs and Consequences of Gaps in Vulnerability Response, Ponemom Institute 2. Cost of a Data Breach Report 2021, IBM

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