Multiple vulnerabilities in GNU LibreDWG



Published: 2018-07-20 | Updated: 2020-07-17
Risk Medium
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2018-14524
CVE-2018-14471
CVE-2018-14443
CWE-ID CWE-415
CWE-476
CWE-119
Exploitation vector Network
Public exploit N/A
Vulnerable software
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LibreDWG
Universal components / Libraries / Libraries used by multiple products

Vendor GNU

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Double Free

EUVDB-ID: #VU31266

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-14524

CWE-ID: CWE-415 - Double Free

Exploit availability: No

Description

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

dwg_decode_eed in decode.c in GNU LibreDWG before 0.6 leads to a double free (in dwg_free_eed in free.c) because it does not properly manage the obj->eed value after a free occurs.

Mitigation

Install update from vendor's website.

Vulnerable software versions

LibreDWG: 0.3 - 0.5.1098

External links

http://github.com/LibreDWG/libredwg/issues/33
http://savannah.gnu.org/forum/forum.php?forum_id=9211


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.

2) NULL pointer dereference

EUVDB-ID: #VU31267

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-14471

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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

The vulnerability exists due to a NULL pointer dereference error. A remote attacker can trigger denial of service conditions via a crafted dwg file.

Mitigation

Update to version 0.6.

Vulnerable software versions

LibreDWG: 0.3 - 0.5.1098

External links

http://github.com/LibreDWG/libredwg/issues/32


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.

3) Buffer overflow

EUVDB-ID: #VU31268

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-14443

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

get_first_owned_object in dwg.c in GNU LibreDWG 0.5.1036 allows remote attackers to cause a denial of service (SEGV).

Mitigation

Install update from vendor's website.

Vulnerable software versions

LibreDWG: 0.3 - 0.5.1098

External links

http://hac425.unaux.com/index.php/archives/53/
http://github.com/ArchimedesCAD/libredwg/issues/6


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.



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