In HylaFAX+ through 7.0.2 and HylaFAX Enterprise, the faxsetup utility calls chown on files in user-owned directories. By winning a race, a local attacker could use this to escalate his privileges to root.
CVSS 3.x
| Source | Score | Severity | Vector | Exploitability | Impact |
|---|---|---|---|---|---|
| nvd@nist.gov | 7.8 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | 1.8 | 5.9 |
CVSS 2.0
Severity: HIGH
Problem Type: CWE-362,
Products Affected
| Vendor | Product | Version |
|---|---|---|
| fedoraproject | fedora | 31 |
| fedoraproject | fedora | 32 |
| opensuse | leap | 15.2 |
| ifax | hylafax_enterprise | - |
| opensuse | leap | 15.1 |
| opensuse | backports_sle | 15.0 |
| hylafax+_project | hylafax+ | * |
HylaFAX+ through 7.0.2 and HylaFAX Enterprise have scripts that execute binaries from directories writable by unprivileged users (e.g., locations under /var/spool/hylafax that are writable by the uucp account). This allows these users to execute code in the context of the user calling these binaries (often root).
CVSS 3.x
| Source | Score | Severity | Vector | Exploitability | Impact |
|---|---|---|---|---|---|
| nvd@nist.gov | 7.8 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | 1.8 | 5.9 |
CVSS 2.0
Severity: HIGH
Problem Type: CWE-732,
Products Affected
| Vendor | Product | Version |
|---|---|---|
| ifax | hylafax_enterprise | - |
| hylafax+_project | hylafax+ | * |