CVE-2018-0490: debian debian_linux NULL Pointer Dereference
Vulnerability summary
CVE-2018-0490 is a high (CVSS 7.5) NULL Pointer Dereference vulnerability in debian debian_linux. EPSS estimates a 2.64% chance of exploitation in the next 30 days, higher than 85.3% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 4 · Related 3Timeline
- 05-03-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
2.64%
Chance of exploitation in the next 30 days
Percentile
85%
Versus all other CVEs
30-day change
0.00 pp
From 2.64% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian2 products
- tor< 0.3.2.10-1 | < 0.2.9.15-1
- debian_linuxEOL9.0
Torproject1 product
- tor≤ 0.2.9.14 | ≥ 0.3.1.7, ≤ 0.3.1.9 | 0.3.1.1:alpha | 0.3.1.2:alpha | 0.3.1.3:alpha | 0.3.1.4:alpha | 0.3.1.5:alpha | 0.3.1.6:rc | 0.3.2.1:alpha | 0.3.2.2:alpha | 0.3.2.3:alpha | 0.3.2.4:alpha | 0.3.2.5:alpha | 0.3.2.6:alpha | 0.3.2.7:rc | 0.3.2.8:rc | 0.3.2.9
Ubuntu1 product
- tor< 0.2.9.14-1ubuntu1~16.04.3
3 vendors · 4 products
References
6 links
- blog.torproject.org/new-stable-tor-releases-security-fixes-and-dos-prevention-03210-03110-02915X Refsource CONFIRMVendor AdvisoryREPORT