CVE-2001-1013
MediumPublic exploitApache on Red Hat Linux with with the UserDir directive enabled generates different error codes when a username exists and there is no public_html directory and when the username does not exist, which could allow remote attackers to determine valid usernames on the server.
Published Feb 2, 2002 · Updated Aug 8, 2024
Key Facts
Patch immediately- CVE-2001-1013 is a medium-severity vulnerability (CVSS 5.0 v2) affecting Linux (Redhat).
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 66% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v2
5.0
AV:N/AC:L/Au:N/C:P/I:N/A:N
EPSS (30-day exploit likelihood)
66%
Higher than 99.2% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2001-1013 brief as a PDF
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Description
Apache on Red Hat Linux with with the UserDir directive enabled generates different error codes when a username exists and there is no public_html directory and when the username does not exist, which could allow remote attackers to determine valid usernames on the server.
Affected Products
1 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| LinuxRedhat | 7.0 | n/a |
Timeline
Publicly disclosed
Feb 2, 2002
Last updated
Aug 8, 2024
References
- advisory20000707 (no subject)
- advisory20000707 Re: your mail
- advisory20010912 Is there user Anna at your host ?
- patch3335
- exploitExploitDB-21112
FAQ
Common Questions.
Apache on Red Hat Linux with with the UserDir directive enabled generates different error codes when a username exists and there is no public_html directory and when the username does not exist, which could allow remote attackers to determine valid usernames on the server.
Affected: Linux (Redhat) versions 7.0. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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