#VU36072 Out-of-bounds read in LibreDWG - CVE-2019-9778

Vulnerability identifier: #VU36072

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-2019-9778

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
LibreDWG
Universal components / Libraries / Libraries used by multiple products

Vendor: GNU

Description

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

The vulnerability exists due to heap-based buffer over-read in the function dwg_dxf_LTYPE at dwg.spec. A remote attacker can perform a denial of service attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

LibreDWG: 0.7 - 0.7.1645

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External links
https://lists.opensuse.org/opensuse-security-announce/2020-01/msg00033.html
https://lists.opensuse.org/opensuse-security-announce/2020-01/msg00045.html
https://www.securityfocus.com/bid/107447
https://github.com/LibreDWG/libredwg/issues/99
https://savannah.gnu.org/bugs/index.php?55893

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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.