CVE-2019-20172
Last modified
CVE-2019-20172 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Kernel/VM/MemoryManager.cpp in SerenityOS before 2019-12-30 does not reject syscalls with pointers into the kernel-only virtual address space, which allows local users to gain privileges by overwriting a return address that was found on the kernel stack.. EPSS estimates a 0.47% chance of exploitation in the next 30 days.
Description
Kernel/VM/MemoryManager.cpp in SerenityOS before 2019-12-30 does not reject syscalls with pointers into the kernel-only virtual address space, which allows local users to gain privileges by overwriting a return address that was found on the kernel stack.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Serenityos | Serenityos | < 2019-12-30 |
References
- https://github.com/Fire30/CTF-WRITEUPS/tree/master/36c3_ctf/wisdomExploit, Third Party Advisory
- https://github.com/SerenityOS/serenity/commit/0fc24fe2564736689859e7edfa177a86dac36bf9Patch, Third Party Advisory
- https://github.com/Fire30/CTF-WRITEUPS/tree/master/36c3_ctf/wisdomExploit, Third Party Advisory
- https://github.com/SerenityOS/serenity/commit/0fc24fe2564736689859e7edfa177a86dac36bf9Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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