CVE-2020-35766: High severity opendaylight vulnerability
The test suite in libopendkim in OpenDKIM through 2.10.3 allows local users to gain privileges via a symlink attack against the /tmp/testkeys file (related to t-testdata.h, t-setup.c, and t-cleanup.c). NOTE: this is applicable to persons who choose to engage in the "A number of self-test programs are included here for unit-testing the library" situation.
Affected Software
Remediation
Patch Available
Event History
Frequently Asked Questions
What is the severity of CVE-2020-35766?
CVE-2020-35766 has a medium severity rating due to the potential privilege escalation via a symlink attack.
How do I fix CVE-2020-35766?
To fix CVE-2020-35766, upgrade to the latest version of OpenDKIM that addresses the vulnerability.
Who is affected by CVE-2020-35766?
CVE-2020-35766 affects local users of OpenDKIM versions up to 2.10.3 who can execute the test suite.
What is a symlink attack in the context of CVE-2020-35766?
A symlink attack occurs when an attacker creates a symbolic link that redirects to a sensitive file, allowing unauthorized access or privilege escalation.
Are there any workarounds for CVE-2020-35766?
As a temporary measure, restrict access to the /tmp/testkeys file to prevent unauthorized symlink creation in OpenDKIM.