PT-2017-3080 · Gnu+5 · Gnu C Library+5

Published 2017-10-21 · Updated 2018-09-26 · CVE-2017-15804

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/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) versions prior to 2.27

Description The issue is related to a buffer overflow in the glob function during unescaping of user names with the ~ operator. This can be exploited by a remote attacker to cause a denial of service or potentially execute arbitrary code.

Recommendations For versions prior to 2.27, update to version 2.27 or later to resolve the issue. As a temporary workaround, consider restricting the use of the ~ operator in user names to minimize the risk of exploitation.

Exploit

Fix

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

ALT-PU-2017-2516

ALT-PU-2017-2833

BDU:2017-02450

BDU:2021-06342

CESA-2018_0805

CESA-2018_1879

CVE-2017-15804

MGASA-2017-0464

MGASA-2017-0470

OPENSUSE-SU-2018_0089-1

RHSA-2018:0805

RHSA-2018:1879

RHSA-2018_0805

RHSA-2018_1879

SUSE-SU-2018:0074-1

SUSE-SU-2018:2185-1

SUSE-SU-2018:2187-1

SUSE-SU-2018:2883-1

USN-3534-1

Affected Products

Alt Linux

Centos

Gnu C Library

Red Hat

Suse

Ubuntu

References · 131

• 🔥 https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/local/glibc_realpath_priv_esc.rb · Exploit
• 🔥 https://github.com/qazbnm456/awesome-cve-poc/blob/master/Stack-Clash.md · Exploit
• 🔥 https://github.com/0x00-0x00/CVE-2018-1000001 · Exploit
• https://osv.dev/vulnerability/SUSE-SU-2018:0074-1 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2017-0470.html · Security Note
• https://errata.altlinux.org/ALT-PU-2017-2833 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-17426 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2017-15804 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6551 · Security Note
• https://osv.dev/vulnerability/USN-3534-1 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15804 · Security Note
• https://access.redhat.com/errata/RHSA-2018:1879 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-1000366 · Security Note
• https://bdu.fstec.ru/vul/2017-02450 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-1000408 · Security Note