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RHSA-2002:216: fetchmail security update

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RHSA-2002:216: fetchmail security update

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
Published
10/11/2002
Created
07/25/2018
Added
10/28/2005
Modified
07/12/2017

Description

Updated Fetchmail packages are available for Red Hat Linux Advanced Server which close a remotely-exploitable vulnerability in unpatched versions of Fetchmail prior to 6.1.0.

Fetchmail is a remote mail retrieval and forwarding utility intended for use over on-demand TCP/IP links such as SLIP and PPP connections. Two bugs have been found in the header parsing code in versions of Fetchmail prior to 6.1.0. The first bug allows a remote attacker to crash Fetchmail by sending a carefully crafted DNS packet. The second bug allows a remote attacker to carefully craft an email in such a way that when it is parsed by Fetchmail a heap overflow occurs, allowing remote arbitrary code execution. Both of these bugs are only exploitable if Fetchmail is being used in multidrop mode (using the "multiple-local-recipients" feature). All users of Fetchmail are advised to upgrade to the errata packages containing a backported fix which is not vulnerable to these issues.

Solution(s)

  • redhat-upgrade-fetchmail
  • redhat-upgrade-fetchmailconf

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