Vulnerability Details : CVE-2018-0490
An issue was discovered in Tor before 0.2.9.15, 0.3.1.x before 0.3.1.10, and 0.3.2.x before 0.3.2.10. The directory-authority protocol-list subprotocol implementation allows remote attackers to cause a denial of service (NULL pointer dereference and directory-authority crash) via a misformatted relay descriptor that is mishandled during voting.
Vulnerability category: Memory CorruptionDenial of service
Products affected by CVE-2018-0490
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.3.1.2:alpha:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.3.1.3:alpha:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.3.1.4:alpha:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.3.1.5:alpha:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.3.1.1:alpha:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.3.2.6:alpha:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.3.2.5:alpha:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.3.2.4:alpha:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.3.2.3:alpha:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.3.2.8:rc:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.3.2.1:alpha:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.3.1.6:rc:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.3.2.7:rc:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.3.2.9:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.3.2.2:alpha:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-0490
0.68%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 78 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-0490
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2018-0490
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-0490
-
https://www.debian.org/security/2018/dsa-4183
Debian -- Security Information -- DSA-4183-1 torThird Party Advisory
-
https://blog.torproject.org/new-stable-tor-releases-security-fixes-and-dos-prevention-03210-03110-02915
New stable Tor releases, with security fixes and DoS prevention: 0.3.2.10, 0.3.1.10, 0.2.9.15 | Tor BlogVendor Advisory
-
https://trac.torproject.org/projects/tor/ticket/25074
#25074 (TROVE-2018-001: null-pointer crash in directory authority protocol list code) – Tor Bug Tracker & WikiVendor Advisory
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