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archlinuxArchLinuxASA-201911-3
HistoryNov 03, 2019 - 12:00 a.m.

[ASA-201911-3] glibc: information disclosure

2019-11-0300:00:00
security.archlinux.org
24

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.004 Low

EPSS

Percentile

72.5%

Arch Linux Security Advisory ASA-201911-3

Severity: High
Date : 2019-11-03
CVE-ID : CVE-2019-9169
Package : glibc
Type : information disclosure
Remote : No
Link : https://security.archlinux.org/AVG-855

Summary

The package glibc before version 2.30-1 is vulnerable to information
disclosure.

Resolution

Upgrade to 2.30-1.

pacman -Syu “glibc>=2.30-1”

The problem has been fixed upstream in version 2.30.

Workaround

None.

Description

In the GNU C Library (aka glibc or libc6) through 2.29,
proceed_next_node in posix/regexec.c has a heap-based buffer over-read
via an attempted case-insensitive regular-expression match.

Impact

An attacker is able to use malicious regular expressions to get access
to sensitive information.

References

https://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=583dd860d5b833037175247230a328f0050dbfe9
https://sourceware.org/bugzilla/show_bug.cgi?id=24114
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=34142
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=34140
https://security.archlinux.org/CVE-2019-9169

OSVersionArchitecturePackageVersionFilename
ArchLinuxanyanyglibc< 2.30-1UNKNOWN

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.004 Low

EPSS

Percentile

72.5%