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Debian LTS Advisory ([SECURITY] [DLA 2021-1] libav 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 'libav' package(s) announced via the DSA-2021-1 advisory.

Insight

Insight

Several security issues were fixed in libav, a multimedia library for processing audio and video files. CVE-2017-17127 The vc1_decode_frame function in libavcodec/vc1dec.c allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted file. CVE-2018-19130 is a duplicate of this vulnerability. CVE-2017-18245 The mpc8_probe function in libavformat/mpc8.c allows remote attackers to cause a denial of service (heap-based buffer over-read) via a crafted audio file on 32-bit systems. CVE-2018-19128 Heap-based buffer over-read in decode_frame in libavcodec/lcldec.c allows an attacker to cause denial-of-service via a crafted avi file. CVE-2019-14443 Division by zero in range_decode_culshift in libavcodec/apedec.c allows remote attackers to cause a denial of service (application crash), as demonstrated by avconv. CVE-2019-17542 Heap-based buffer overflow in vqa_decode_chunk because of an out-of-array access in vqa_decode_init in libavcodec/vqavideo.c.

Affected Software

Affected Software

'libav' 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 6:11.12-1~deb8u9. We recommend that you upgrade your libav packages.

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

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

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