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Sendmail Address Parsing Buffer Overflow
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Secunia Advisory:
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SA8446
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Release Date:
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2003-03-30
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Popularity:
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18,951 views
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Critical:
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Extremely critical
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Impact:
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DoS
System access
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| OS: | AIX 4.x
AIX 5.x
Cobalt Linux 6
Conectiva Linux 6.0
Conectiva Linux 7.0
Conectiva Linux 8
Debian GNU/Linux 2.x
Debian GNU/Linux 3.0
EnGarde Secure Community 1.x
Gentoo Linux
HP Tru64 UNIX 4.x
HP Tru64 UNIX 5.x
HP-UX 10.x
HP-UX 11.x
Mandrake Linux 7.x
Mandrake Linux 8.x
Mandrake Linux 9.x
Open UNIX 8.x.x
OpenLinux Server 3.x
OpenLinux Workstation 3.x
Red Hat Enterprise Linux AS 2.1
Red Hat Enterprise Linux ES 2.1
Red Hat Enterprise Linux WS 2.1
Red Hat Linux 6.2
Red Hat Linux 7.0
Red Hat Linux 7.1
Red Hat Linux 7.2
Red Hat Linux 7.3
Red Hat Linux 8.0
Red Hat Linux Advanced Server 2.1 for Itanium
Red Hat Linux Advanced Workstation 2.1 for Itanium
SGI IRIX 6.5.x
Slackware Linux 8.x
Sun Linux 5.x
Sun Solaris 2.6
Sun Solaris 7
Sun Solaris 8
Sun Solaris 9
SuSE Linux 7.x
SuSE Linux 8.x
SuSE Linux Connectivity Server
SuSE Linux Database Server
SuSE Linux Enterprise Server 7
SuSE Linux Enterprise Server 8
SuSE Linux Firewall on CD/Admin host
SuSE Linux Office Server
Trustix Linux 1.0
Trustix Linux 1.1
Trustix Linux 1.2
Trustix Linux 1.5
UnixWare 7.x.x
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| Software: | Sendmail 8.x
Sendmail Switch 2.x
Sendmail Switch 3.x
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Secunia CVSS-2 Score:
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| Advisory Content (Page 1 of 3) | [ 1 ] [ 2 ] [ 3 ] | |
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Description:
A vulnerability has been discovered in Sendmail, which can be exploited by malicious people to compromise a vulnerable system.
The vulnerability is caused by a boundary error in "parseaddr.c" caused by a "char" to "int" conversion problem, which results in Sendmail not handling long email addresses containing the extended ASCII character "0xff" correct. A malicious person can exploit this to cause a buffer overflow by constructing an email with a specially crafted email address.
Successful exploitation can potentially allow execution of arbitrary code on the vulnerable system with the privileges of the sendmail process (typically "root").
Note: Internal vulnerable mail servers are also at risk, since a malicious email can be forwarded by an external, non-vulnerable mail server.
The following Sendmail versions have been confirmed vulnerable:
* Sendmail Pro (all versions)
* Sendmail Switch 2.1 prior to 2.1.6
* Sendmail Switch 2.2 prior to 2.2.6
* Sendmail Switch 3.0 prior to 3.0.4
* Sendmail for NT 2.X prior to 2.6.3
* Sendmail for NT 3.0 prior to 3.0.4
* Systems running open-source sendmail versions prior to 8.12.9, including UNIX and Linux systems.
Change Page:
[ 1 ] [ 2 ] [ 3 ]
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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