REDHAT-BUG-602800
First published: Thu Jun 10 2010(Updated: )
+++ This bug was initially created as a clone of <a class="bz_bug_link bz_status_CLOSED bz_closed bz_public " title="CLOSED ERRATA - CVE-2010-2251 lftp: multiple HTTP client download filename vulnerability [OCERT 2010-001]" href="show_bug.cgi?id=591580">Bug #591580</a> +++ The draft advisory from oCERT follows: The lftp, wget and lwp-download applications are ftp/http clients and file transfer tools supporting various network protocols. The lwp-download script is shipped along with the libwww-perl library. Unsafe behaviours have been found in lftp and lwp-download handling the Content-Disposition header in conjunction with the 'suggested filename' functionality. Additionally unsafe behaviours have been found in wget and lwp-download in case of HTTP 3xx redirections during file dowloading. The two applications automatically use the URL's filename portion specified in the Location header. Implicitly trusting the suggested filenames results in a saved file that differs from the expected one according to the URL specified by the user. This can be used by a malicious attacker to silently write hidden and/or initialization files under the user's current directory (e.g. .login, .bashrc). The impact of this vulnerability is increased in the case of lftp/lftpget as the default configuration allows file overwrite without prompting confirmation to the user. In case of lftp the get1 command is affected. This command can be invoked directly by the user from lftp's command line interface or indirectly by using the lftpget script, packaged within lftp distribution. Affected version: lftp <= 4.0.5 wget <= 1.12 libwww-perl <= 5.834 Fixed version: lftp >= 4.0.6 wget N/A libwww-perl >= 5.835 Credit: Vulnerability discovered and reported by Hank Leininger and Solar Designer under the Openwall Project, with further analysis by Daniele Bianco of oCERT. MITRE has assigned the name <a href="https://access.redhat.com/security/cve/CVE-2010-2253">CVE-2010-2253</a> to this issue.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| lftp | <=4.0.5 | |
| Wget | <=1.12 | |
| libwww-perl | <=5.834 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=591580
- https://access.redhat.com/security/cve/CVE-2010-2253
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=448870&action=diff
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=448870&action=edit
- http://www.redhat.com/security/updates/certificate/
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=637788
- https://access.redhat.com/security/cve/cve-2010-2253
- https://bugzilla.redhat.com/show_bug.cgi?id=602800
Frequently Asked Questions
What is the severity of REDHAT-BUG-602800?
The severity of REDHAT-BUG-602800 is considered critical due to potential exploitation leading to arbitrary file downloads.
How does REDHAT-BUG-602800 affect lftp?
REDHAT-BUG-602800 affects lftp versions up to 4.0.5 by allowing multiple HTTP client download filename vulnerabilities.
Which software is affected by REDHAT-BUG-602800?
REDHAT-BUG-602800 impacts lftp, GNU Wget, and Perl libwww-perl within their specified version ranges.
How do I fix REDHAT-BUG-602800?
To fix REDHAT-BUG-602800, update affected software packages to the latest stable version that addresses this vulnerability.
Is there a known exploit for REDHAT-BUG-602800?
Yes, there are known exploits for REDHAT-BUG-602800 that can leverage the HTTP client's vulnerabilities for unauthorized file downloads.
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