mport is the MidnightBSD Package Manager. Prior to 2.7.8, the mport_fetch_index(), mport_fetch_bootstrap_index(), and mport_fetch_bundle() paths in libmport/fetch.c accepted non-HTTPS repository and package mirror URLs without a url_is_https() enforcement check. When a cleartext URL was configured or returned by mirror data, a network-positioned attacker could tamper with package index or package download traffic and compromise package selection or integrity.
This issue is fixed in version 2.7.8.
Attack Parameters
Attack Vector
Adjacent
Requires local network access
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
High
Complete data modification
Availability
Low
Partial disruption
CVSS Vector v4.0
Weakness Type (CWE)
References 4
https://github.com/MidnightBSD/mport/commit/9b4d0f9192b243ee32266afa36dce430b25…
security-advisories@github.com
https://github.com/MidnightBSD/mport/pull/121
security-advisories@github.com
https://github.com/MidnightBSD/mport/releases/tag/2.7.8
security-advisories@github.com
https://github.com/MidnightBSD/mport/security/advisories/GHSA-v5pv-7gxw-74r5
security-advisories@github.com