Buffer overflow in GNU C Library (glibc)

1) Stack-based buffer overflow

EUVDB-ID: #VU26388

Risk: High

CVSSv3.1: 7.4 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2020-10029

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error within "sysdeps/ieee754/ldbl-96/e_rem_pio2l.c" in GNU C Library (aka glibc or libc6). An attacker can pas specially crafted input to the application and trigger a stack-based buffer overflow.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system or denial of service conditions.

Mitigation

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

Vulnerable software versions

Glibc: 2.30 - 2.31

External links

http://sourceware.org/bugzilla/show_bug.cgi?id=25487
http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commit;h=9333498794cde1d5cca518badf79533a24114b6f

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.