Medium severity5.5NVD Advisory· Published Sep 1, 2020· Updated Jun 17, 2026
CVE-2020-15704
CVE-2020-15704
Description
The modprobe child process in the ./debian/patches/load_ppp_generic_if_needed patch file incorrectly handled module loading. A local non-root attacker could exploit the MODPROBE_OPTIONS environment variable to read arbitrary root files. Fixed in 2.4.5-5ubuntu1.4, 2.4.5-5.1ubuntu2.3+esm2, 2.4.7-1+2ubuntu1.16.04.3, 2.4.7-2+2ubuntu1.3, 2.4.7-2+4.1ubuntu5.1, 2.4.7-2+4.1ubuntu6. Was ZDI-CAN-11504.
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Affected products
3- Canonical/pppv5Range: 2.4.5
Patches
Vulnerability mechanics
References
2- ubuntu.com/security/notices/USN-4451-1nvdVendor Advisory
- ubuntu.com/security/notices/USN-4451-2nvdVendor Advisory
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