CVE-2024-5742: Nano: running `chmod` and `chown` on the filename allows malicious user to replace the emergency file with a malicious symlink to a root-owned file
First published: Thu May 02 2024(Updated: )
A vulnerability was found in GNU Nano that allows a possible privilege escalation through an insecure temporary file. If Nano is killed while editing, a file it saves to an emergency file with the permissions of the running user provides a window of opportunity for attackers to escalate privileges through a malicious symlink.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/nano | <8.0 | 8.0 |
| debian/nano | 5.4-2+deb11u3 7.2-1+deb12u1 8.3-1 | |
| GNU nano | >=2.2.0<8.0 | |
| Red Hat Enterprise Linux | =6.0 | |
| Red Hat Enterprise Linux | =7.0 | |
| Red Hat Enterprise Linux | =8.0 | |
| Red Hat Enterprise Linux | =9.0 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2277586
- https://git.savannah.gnu.org/cgit/nano.git/commit/?id=5e7a3c2e7e118c7f12d5dfda9f9140f638976aa2
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2290866
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2290867
- https://git.savannah.gnu.org/cgit/nano.git/commit/?id=ce5513b009a4c639d3a0b057fa0de94cd82e14e4
- https://access.redhat.com/errata/RHSA-2024:6986
- https://bugzilla.redhat.com/show_bug.cgi?id=2278574
- https://access.redhat.com/security/cve/CVE-2024-5742
- https://lists.debian.org/debian-lts-announce/2024/06/msg00006.html
- https://launchpad.net/bugs/cve/CVE-2024-5742
- https://git.savannah.gnu.org/cgit/nano.git/commit/?id=123110c5dc3e0d8c60a4ff0121056e301f503706
- https://security-tracker.debian.org/tracker/CVE-2024-5742
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-5742
- https://nvd.nist.gov/vuln/detail/CVE-2024-5742
- https://ubuntu.com/security/CVE-2024-5742
- https://access.redhat.com/errata/RHSA-2024:9430
Frequently Asked Questions
What is the severity of CVE-2024-5742?
The severity of CVE-2024-5742 is classified as a privilege escalation vulnerability.
How do I fix CVE-2024-5742?
To fix CVE-2024-5742, update GNU Nano to version 8.0 or above.
Which versions of GNU Nano are affected by CVE-2024-5742?
CVE-2024-5742 affects GNU Nano versions prior to 8.0.
Can CVE-2024-5742 affect Red Hat Enterprise Linux?
Yes, CVE-2024-5742 can potentially affect Red Hat Enterprise Linux versions 6.0 to 8.0.
What kind of attacks can CVE-2024-5742 facilitate?
CVE-2024-5742 may allow attackers to escalate privileges under certain conditions during file editing.
- agent/title
- agent/type
- agent/first-publish-date
- collector/epss-latest
- source/FIRST
- agent/epss
- agent/weakness
- agent/severity
- collector/launchpad-cve
- source/Launchpad
- agent/author
- collector/usn-cve
- source/Ubuntu
- agent/description
- agent/event
- agent/references
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2024-5742
- agent/software-canonical-lookup
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/trending
- collector/security-tracker-debian
- source/Debian
- collector/nvd-cve
- source/NVD
- agent/software-canonical-lookup-request
- collector/nvd-api
- agent/softwarecombine
- agent/tags
- agent/source
- package-manager/redhat
- package-manager/debian
- vendor/gnu
- canonical/gnu nano
- version/gnu nano/2.2.0
- vendor/redhat
- canonical/red hat enterprise linux
- version/red hat enterprise linux/6.0
- version/red hat enterprise linux/7.0
- version/red hat enterprise linux/8.0
- version/red hat enterprise linux/9.0