7.5

CVE-2017-8820: debian debian_linux NULL Pointer Dereference

CVSS: 7.5v3.0HighModified
AliasesUBUNTU-CVE-2017-8820DEBIAN-CVE-2017-8820
Published 03-12-2017Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2017-8820 is a high (CVSS 7.5) NULL Pointer Dereference vulnerability in debian debian_linux. EPSS estimates a 1.70% chance of exploitation in the next 30 days, higher than 76.8% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.0 (NVD)
EPSS score
1.70%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 5 · Related 3
DSA-4054-1MGASA-2017-0444OPENSUSE-SU-2017:3201-1OPENSUSE-SU-2017:3203-1OPENSUSE-SU-2024:11469-1

Timeline

  1. 03-12-2017
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

In Tor before 0.2.5.16, 0.2.6 through 0.2.8 before 0.2.8.17, 0.2.9 before 0.2.9.14, 0.3.0 before 0.3.0.13, and 0.3.1 before 0.3.1.9, remote attackers can cause a denial of service (NULL pointer dereference and application crash) against directory authorities via a malformed descriptor, aka TROVE-2017-010.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.70%

Chance of exploitation in the next 30 days

Percentile

77%

Versus all other CVEs

30-day change

0.00 pp

From 1.70% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.70%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian2 products
Tor_project1 product
  • tor< 0.2.5.16 | ≥ 0.2.6, < 0.2.8.17 | ≥ 0.2.9, < 0.2.9.14 | ≥ 0.3.0, < 0.3.0.13 | ≥ 0.3.1, < 0.3.1.9
Ubuntu1 product
  • tor< 0.2.9.14-1ubuntu1~16.04.2

3 vendors · 4 products

References

6 links