UBUNTU-CVE-2018-1120
A flaw was found affecting the Linux kernel before version 4.17. By mmap()ing a FUSE-backed file onto a process's memory containing command line arguments (or environment strings), an attacker can cause utilities from psutils or procps (such as ps, w) or any other program which makes a read() call to the /proc/<pid>/cmdline (or /proc/<pid>/environ) files to block indefinitely (denial of service) or for some controlled time (as a synchronization primitive for other attacks).
02 / AFFECTED SOFTWARE
Affected packages
57 explicit affected versions
8 explicit affected versions
6 explicit affected versions
61 explicit affected versions
191 explicit affected versions
11 explicit affected versions
16 explicit affected versions
1 explicit affected versions
8 explicit affected versions
12 explicit affected versions
7 explicit affected versions
1 explicit affected versions
25 explicit affected versions
4 explicit affected versions
11 explicit affected versions
23 explicit affected versions
65 explicit affected versions
59 explicit affected versions
12 explicit affected versions
25 explicit affected versions
18 explicit affected versions
7 explicit affected versions
87 explicit affected versions
51 explicit affected versions
20 explicit affected versions
7 explicit affected versions
46 explicit affected versions
11 explicit affected versions
26 explicit affected versions
10 explicit affected versions
38 explicit affected versions
3 explicit affected versions
1 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
A flaw was found affecting the Linux kernel before version 4.17. By mmap()ing a FUSE-backed file onto a process's memory containing command line arguments (or environment strings), an attacker can cause utilities from psutils or procps (such as ps, w) or any other program which makes a read() call to the /proc/<pid>/cmdline (or /proc/<pid>/environ) files to block indefinitely (denial of service) or for some controlled time (as a synchronization primitive for other attacks).
05 / REFERENCES
Further evidence
- http://www.openwall.com/lists/oss-security/2018/05/17/1
- https://ubuntu.com/security/CVE-2018-1120
- https://ubuntu.com/security/notices/USN-3752-1
- https://ubuntu.com/security/notices/USN-3752-2
- https://ubuntu.com/security/notices/USN-3752-3
- https://ubuntu.com/security/notices/USN-3910-1
- https://ubuntu.com/security/notices/USN-3910-2
- https://www.cve.org/CVERecord?id=CVE-2018-1120