PT-2017-14773 · Gnu+1 · Gnu C Library+1

Iain Buclaw · Published 2017-12-05 · Updated 2024-06-15 · CVE-2017-17426

Positive Technologies (AI Summary)

CVSS v3.1

8.1

High

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions GNU C Library (aka glibc or libc6) version 2.26

Description The issue arises from the malloc function in the GNU C Library, which could return a memory block that is too small when attempting to allocate an object of size close to SIZE MAX. This could potentially lead to a subsequent heap overflow due to the per-thread cache feature lacking an integer overflow check.

Recommendations For GNU C Library (aka glibc or libc6) version 2.26, consider updating to a newer version that includes the necessary integer overflow check in the malloc function to prevent potential heap overflows.

Exploit

Fix

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

CVE-2017-17426

OPENSUSE-SU-2024:10792-1

USN-3534-1

Affected Products

Gnu C Library

Ubuntu

References · 71

• 🔥 https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/local/glibc_realpath_priv_esc.rb · Exploit
• 🔥 https://github.com/0x00-0x00/CVE-2018-1000001 · Exploit
• 🔥 https://sourceware.org/bugzilla/show_bug.cgi?id=22375 · Exploit
• https://osv.dev/vulnerability/CVE-2017-17426 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3534-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2017-17426 · Security Note
• https://bdu.fstec.ru/vul/2017-02450 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15670 · Security Note
• https://bdu.fstec.ru/vul/2021-06342 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000001 · Security Note
• https://ubuntu.com/security/CVE-2018-1000001 · Vendor Advisory
• https://bdu.fstec.ru/vul/2022-05945 · Security Note
• https://ubuntu.com/security/CVE-2017-15804 · Vendor Advisory
• https://bdu.fstec.ru/vul/2018-00411 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2017-17426 · Security Note