CVE-2024-5742

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.

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.

Nano is now part of Apache CouchDB.

Security Fix(es):

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.(CVE-2024-5742)

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.

GNU nano is a small and friendly text editor.

Security Fix(es):

• 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 (CVE-2024-5742)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

GNU nano is a small and friendly text editor.

Security Fix(es):

• 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 (CVE-2024-5742)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

• CVE-2024-5742: emergency_save() applied chmod/chown to a path after the descriptor was closed, allowing a symlink swap to redirect the ownership change to an attacker-controlled file
• Backport of upstream commit 5e7a3c2e from nano v8.0, adapted to the 5.6.1 codebase (write_file signature predates the SPECIAL/NONOTES refactor)

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. (CVE-2024-5742)

This update for nano fixes the following issues:

• CVE-2024-5742: Avoid privilege escalations via symlink attacks on emergency save file (boo#1226099)

This update for nano fixes the following issues:

• CVE-2024-5742: Avoid privilege escalations via symlink attacks on emergency save file (boo#1226099)

These are all security issues fixed in the nano-8.0-2.1 package on the GA media of openSUSE Tumbleweed.

GNU nano is a small and friendly text editor.

Security Fix(es):

• 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 (CVE-2024-5742)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

GNU nano is a small and friendly text editor.

Security Fix(es):

• 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 (CVE-2024-5742)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Rocky Linux 9.5 Release Notes linked from the References section.

It was discovered that nano allowed a possible privilege escalation through an insecure temporary file. If nano was killed while editing, the permissions granted to the emergency save file could be used by an attacker to escalate privileges using a malicious symlink.

USN-7064-1 fixed a vulnerability in nano. This update provides the corresponding update for Ubuntu 14.04 LTS.

Original advisory details:

It was discovered that nano allowed a possible privilege escalation through an insecure temporary file. If nano was killed while editing, the permissions granted to the emergency save file could be used by an attacker to escalate privileges using a malicious symlink.