CVE-2011-0017: exim Improper Input Validation
CVSS: 6.9v2.0MediumModified
AliasesDEBIAN-CVE-2011-0017
Published 02-02-2011Last modified 06-08-2024
Some data may be incomplete
- 1 reference with an unsupported link type was hidden.
Vulnerability summary
CVE-2011-0017 is a medium (CVSS 6.9) Improper Input Validation vulnerability in exim. EPSS estimates a 0.38% chance of exploitation in the next 30 days, higher than 30.5% of scored vulnerabilities.
CVSS score
6.9/10
010
Medium · v2.0 (NVD)EPSS score
0.38%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 2 · Related 1Timeline
- 02-02-2011PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
The open_log function in log.c in Exim 4.72 and earlier does not check the return value from (1) setuid or (2) setgid system calls, which allows local users to append log data to arbitrary files via a symlink attack.
CVSS metrics
1 score · 1 source · 1 versionMedium 6.9Preferred score · NVD (NIST)
AV:L/AC:M/Au:N/C:C/I:C/A:CSourcesSingle source
EPSS trend
Probability
0.38%
Chance of exploitation in the next 30 days
Percentile
31%
Versus all other CVEs
30-day change
0.00 pp
From 0.38% on 21-09-2026
21-09-202621-10-2026
EPSS score0.38%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-20Improper Input ValidationThe product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
- CWE-59Improper Link Resolution Before File Access ('Link Following')The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.
Affected systems
Debian1 product
- exim4< 4.72-4
Exim1 product
- eximEOL≤ 4.72 | 2.10 | 2.11 | 2.12 | 3.00 | 3.01 | 3.02 | 3.03 | 3.10 | 3.11 | 3.12 | 3.13 | 3.14 | 3.15 | 3.16 | 3.20 | 3.21 | 3.22 | 3.30 | 3.31 | 3.32 | 3.33 | 3.34 | 3.35 | 3.36 | 4.00 | 4.01 | 4.02 | 4.03 | 4.04 | 4.05 | 4.10 | 4.11 | 4.12 | 4.14 | 4.20 | 4.21 | 4.22 | 4.23 | 4.24 | 4.30 | 4.31 | 4.32 | 4.33 | 4.34 | 4.40 | 4.41 | 4.42 | 4.43 | 4.44 | 4.50 | 4.51 | 4.52 | 4.53 | 4.54 | 4.60 | 4.61 | 4.62 | 4.63 | 4.64 | 4.65 | 4.66 | 4.67 | 4.68 | 4.69 | 4.70 | 4.71
2 vendors · 2 products
