CVE-2020-1752: Use After Free
First published: Thu Apr 30 2020(Updated: )
A use-after-free vulnerability introduced in glibc upstream version 2.14 was found in the way the tilde expansion was carried out. Directory paths containing an initial tilde followed by a valid username were affected by this issue. A local attacker could exploit this flaw by creating a specially crafted path that, when processed by the glob function, would potentially lead to arbitrary code execution. This was fixed in version 2.32.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/glibc | 2.31-13+deb11u11 2.31-13+deb11u10 2.36-9+deb12u9 2.36-9+deb12u7 2.40-6 | |
| GNU C Library (glibc) | <2.32.0 | |
| Ubuntu Linux | =16.04 | |
| Ubuntu Linux | =18.04 | |
| Ubuntu Linux | =19.10 | |
| NetApp Active IQ Unified Manager for VMware vSphere | >=9.5 | |
| netapp hci management node | ||
| netapp solidfire | ||
| NetApp SteelStore | ||
| All of | ||
| netapp h410c firmware | ||
| netapp h410c | ||
| Debian GNU/Linux | =10.0 | |
| GNU C Library | <2.32.0 | |
| Ubuntu | =16.04 | |
| Ubuntu | =18.04 | |
| Ubuntu | =19.10 | |
| netapp h410c firmware | ||
| netapp h410c | ||
| Debian | =10.0 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1752
- https://sourceware.org/bugzilla/show_bug.cgi?id=25414
- https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ddc650e9b3dc916eab417ce9f79e67337b05035c
- https://security.netapp.com/advisory/ntap-20200511-0005/
- https://usn.ubuntu.com/4416-1/
- https://security.gentoo.org/glsa/202101-20
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html
- https://launchpad.net/bugs/cve/CVE-2020-1752
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
- https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=ddc650e9b3dc916eab417ce9f79e67337b05035c
- https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f2962a71959fd254a7a223437ca4b63b9e81130c
- https://security-tracker.debian.org/tracker/CVE-2020-1752
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-1752
- https://nvd.nist.gov/vuln/detail/CVE-2020-1752
- https://ubuntu.com/security/CVE-2020-1752
Frequently Asked Questions
What is CVE-2020-1752?
CVE-2020-1752 is a use-after-free vulnerability in glibc.
How severe is CVE-2020-1752?
CVE-2020-1752 has a severity rating of high (7.0).
What software is affected by CVE-2020-1752?
Ubuntu glibc versions 2.27-3ubuntu1.2, 2.30-0ubuntu2.2, and 2.23-0ubuntu11.2 are affected.
How can I fix CVE-2020-1752 on Ubuntu?
To fix CVE-2020-1752 on Ubuntu, update glibc to versions 2.27-3ubuntu1.2, 2.30-0ubuntu2.2, or 2.23-0ubuntu11.2.
Where can I find more information about CVE-2020-1752?
You can find more information about CVE-2020-1752 on the MITRE CVE website, the Ubuntu Security Notices website, or the NIST NVD website.
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