Vulnerability identifier: #VU37574

Vulnerability risk: Medium

CVSSv3.1: 7.4 [AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:C]

CVE-ID: CVE-2017-1000408

CWE-ID: CWE-401

Exploitation vector: Local

Exploit availability: Yes

Vulnerable software:
Glibc
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 memory leak within glibc 2.1.1 (released on May 24, 1999) can be reached and amplified through the LD_HWCAP_MASK environment variable. Please note that many versions of glibc are not vulnerable to this issue if patched for CVE-2017-1000366. A remote attacker can perform a denial of service attack.

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

Vulnerable software versions

Glibc: 2.1.1

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External links
http://seclists.org/oss-sec/2017/q4/385
http://www.openwall.com/lists/oss-security/2019/06/27/7
http://www.openwall.com/lists/oss-security/2019/06/28/1
http://www.openwall.com/lists/oss-security/2019/06/28/2
http://security.netapp.com/advisory/ntap-20190404-0003/
http://www.exploit-db.com/exploits/43331/

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

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.