6.9

CVE-2009-1893: isc dhcp Link Following

CVSS: 6.9v2.0MediumModified
Published 17-07-2009Last modified 07-08-2024
Open JSON

Vulnerability summary

CVE-2009-1893 is a medium (CVSS 6.9) Link Following vulnerability in isc dhcp. EPSS estimates a 0.60% chance of exploitation in the next 30 days, higher than 47.8% of scored vulnerabilities.

Overall risk
28/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.9/10
010
Medium · v2.0 (NVD)
EPSS score
0.60%
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 1
RHSA-2009:1154

Timeline

  1. 17-07-2009
    PublishedVulnerability first disclosed.
  2. 07-08-2024
    Last modifiedVulnerability information updated.

Description

The configtest function in the Red Hat dhcpd init script for DHCP 3.0.1 in Red Hat Enterprise Linux (RHEL) 3 allows local users to overwrite arbitrary files via a symlink attack on an unspecified temporary file, related to the "dhcpd -t" command.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

0.60%

Chance of exploitation in the next 30 days

Percentile

48%

Versus all other CVEs

30-day change

0.00 pp

From 0.60% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.60%

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

Isc1 product
  • dhcp3.0.1:rc1 | 3.0.1:rc10 | 3.0.1:rc11 | 3.0.1:rc12 | 3.0.1:rc13 | 3.0.1:rc14 | 3.0.1:rc2 | 3.0.1:rc5 | 3.0.1:rc6 | 3.0.1:rc7 | 3.0.1:rc8 | 3.0.1:rc9
Redhat1 product

2 vendors · 2 products

References

8 links