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CVE-2021-3998

Good to know:

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Date: August 23, 2022

A flaw was found in glibc. The realpath() function can mistakenly return an unexpected value, potentially leading to information leakage and disclosure of sensitive data.

Language: C

Severity Score

Related Resources (14)

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ee8d5e33adb284601c00c94687bc907e10aec9bb
https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=84d2d0fe20bdf94feed82b21b4d7d136db471f03
https://bugzilla.redhat.com/show_bug.cgi?id=2024633
https://access.redhat.com/security/cve/CVE-2021-3998
https://www.openwall.com/lists/oss-security/2022/01/24/4
https://security.netapp.com/advisory/ntap-20221020-0003/
https://nvd.nist.gov/vuln/detail/CVE-2021-3998
https://security-tracker.debian.org/tracker/CVE-2021-3998
https://github.com/bminor/glibc/commit/ee8d5e33adb284601c00c94687bc907e10aec9bb
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-3998
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=84d2d0fe20bdf94feed82b21b4d7d136db471f03
https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=ee8d5e33adb284601c00c94687bc907e10aec9bb
https://sourceware.org/bugzilla/show_bug.cgi?id=28770
https://www.mend.io/vulnerability-database/CVE-2021-3998

Severity Score

Weakness Type (CWE)

Out-of-bounds Read

CWE-125

Unchecked Return Value

CWE-252

Top Fix

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Upgrade Version

Upgrade to version glibc-2.35

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

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