#VU32111 Use-after-free in gst-plugins-bad1 - CVE-2017-5843

Vulnerability identifier: #VU32111

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2017-5843

CWE-ID: CWE-416

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
gst-plugins-bad1
Other software / Other software solutions

Vendor: GStreamer

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

Multiple use-after-free vulnerabilities in the (1) gst_mini_object_unref, (2) gst_tag_list_unref, and (3) gst_mxf_demux_update_essence_tracks functions in GStreamer before 1.10.3 allow remote attackers to cause a denial of service (crash) via vectors involving stream tags, as demonstrated by 02785736.mxf.

Mitigation
Install update from vendor's website.

Vulnerable software versions

gst-plugins-bad1: 1.0.2 - 1.10.4

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External links
https://www.debian.org/security/2017/dsa-3818
https://www.openwall.com/lists/oss-security/2017/02/01/7
https://www.openwall.com/lists/oss-security/2017/02/02/9
https://www.securityfocus.com/bid/96001
https://access.redhat.com/errata/RHSA-2017:2060
https://bugzilla.gnome.org/show_bug.cgi?id=777503
https://gstreamer.freedesktop.org/releases/1.10/#1.10.3
https://lists.debian.org/debian-lts-announce/2020/03/msg00038.html
https://security.gentoo.org/glsa/201705-10

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.