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GHSA-x6ph-r535-3vjw
No affected components available
It was discovered that the ld.so.cache in images generated by apko had file system permissions mode 0666:
bash-5.3# find / -type f -perm -o+w
/etc/ld.so.cache
This issue was introduced in commit 04f37e2 ("generate /etc/ld.so.cache (#1629)")(v0.27.0).
Impact
This potentially allows a local unprivileged user to add additional additional directories including dynamic libraries to the dynamic loader path. A user could exploit this by placing a malicious library in a directory they control.
Patches
This issue was addressed in apko in aedb077 ("fix: /etc/ld.so.cache file permissions (#1758)") (v0.29.5).
Acknowledgements
Many thanks to Cody Harris from H2O.ai for reporting this issue.
The vulnerability requires local access to the device to be exploited. It is difficult for an attacker to exploit this vulnerability and may require special conditions. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability. The vulnerability can affect other systems as well, not just the initial system. There is a high impact on the confidentiality of the information. There is a low impact on the integrity of the data. There is a low impact on the availability of the system.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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