Integer overflow in GNU glibc ARMv7



Published: 2020-05-24
Risk Medium
Patch available NO
Number of vulnerabilities 1
CVE-ID CVE-2020-6096
CWE-ID CWE-190
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
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Glibc
Universal components / Libraries / Libraries used by multiple products

Vendor GNU

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Integer overflow

EUVDB-ID: #VU28193

Risk: Medium

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:C]

CVE-ID: CVE-2020-6096

CWE-ID: CWE-190 - Integer Overflow or Wraparound

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow within the the ARMv7 memcpy() implementation of GNU glibc 2.30.9000. A remote attacker can pass specially crafted data to the application, trigger integer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Glibc: 2.30.9000


CPE2.3 External links

http://sourceware.org/bugzilla/show_bug.cgi?id=25620
http://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1019

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.



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