CVE-2021-3998
First published: Thu Nov 18 2021(Updated: )
A flaw was found in glibc. The realpath function may sometimes return a unexpected value, potentially leading to disclosure of sensitive data.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| GNU C Library (glibc) | >=2.33<2.35 | |
| NetApp ONTAP Select Deploy | ||
| All of | ||
| NetApp H300S Firmware | ||
| NetApp H300S Firmware | ||
| All of | ||
| NetApp H500e Firmware | ||
| NetApp H500e Firmware | ||
| All of | ||
| NetApp H700S | ||
| NetApp H700S | ||
| All of | ||
| NetApp H410S | ||
| NetApp H410S Firmware | ||
| All of | ||
| NetApp H410C | ||
| NetApp H410C Firmware | ||
| NetApp H300S Firmware | ||
| NetApp H300S Firmware | ||
| NetApp H500e Firmware | ||
| NetApp H500e Firmware | ||
| NetApp H700S | ||
| NetApp H700S | ||
| NetApp H410S | ||
| NetApp H410S Firmware | ||
| NetApp H410C | ||
| NetApp H410C Firmware | ||
| debian/glibc | 2.31-13+deb11u11 2.31-13+deb11u10 2.36-9+deb12u10 2.36-9+deb12u7 2.41-7 |
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Reference Links
- https://access.redhat.com/security/cve/CVE-2021-3998
- https://bugzilla.redhat.com/show_bug.cgi?id=2024633
- https://security-tracker.debian.org/tracker/CVE-2021-3998
- https://security.netapp.com/advisory/ntap-20221020-0003/
- https://sourceware.org/bugzilla/show_bug.cgi?id=28770
- https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=84d2d0fe20bdf94feed82b21b4d7d136db471f03
- https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=ee8d5e33adb284601c00c94687bc907e10aec9bb
- https://www.openwall.com/lists/oss-security/2022/01/24/4
- https://launchpad.net/bugs/cve/CVE-2021-3998
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2039674
- https://patchwork.sourceware.org/project/glibc/patch/20220113055920.3155918-1-siddhesh@sourceware.org/
- https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ee8d5e33adb284601c00c94687bc907e10aec9bb
- https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f7a79879c0b2bef0dadd6caaaeeb0d26423e04e5
- https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=c6e0b0b5b0b7922cdf0dce2af671e0c7e500df95
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3998
- https://nvd.nist.gov/vuln/detail/CVE-2021-3998
- https://ubuntu.com/security/CVE-2021-3998
Frequently Asked Questions
What is CVE-2021-3998?
CVE-2021-3998 is a vulnerability in glibc that allows the realpath() function to return unexpected values, potentially leading to information leakage and disclosure of sensitive data.
How severe is CVE-2021-3998?
CVE-2021-3998 has a severity rating of 7.5 out of 10, indicating a high severity.
Which software is affected by CVE-2021-3998?
CVE-2021-3998 affects GNU glibc, NetApp ONTAP Select Deploy administration utility, Apple macOS Ventura, Apple macOS Big Sur, Apple macOS Monterey, and Netapp H410c Firmware.
How can I fix CVE-2021-3998?
To fix CVE-2021-3998, update the affected software to the latest version provided by the respective vendors.
Where can I find more information about CVE-2021-3998?
You can find more information about CVE-2021-3998 in the references provided: [Reference 1](https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2039674), [Reference 2](https://sourceware.org/bugzilla/show_bug.cgi?id=28770), [Reference 3](https://patchwork.sourceware.org/project/glibc/patch/20220113055920.3155918-1-siddhesh@sourceware.org/).
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