196 : Sendmail decode Alias Arbitrary File Overwrite
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
5	1413	over 10 years ago	over 3 years ago	6 times	90%

Timeline

Disclosure Date
1989-05-20

Description

Sendmail contains a flaw that may allow a remote attacker to overwrite arbitrary files. The issue is due tot he program allowing remote access to the 'decode' alias. By sending a crafted email to the alias, the sendmail program would write user-supplied content to an arbitrary file as well as set custom permissions.

Classification

Location: Remote / Network Access
Attack Type: Misconfiguration
Impact: Loss of Integrity, Loss of Availability
Exploit: Exploit Public

Solution

Upgrade to version 5.67 or higher, as it has been reported to fix this vulnerability. It is also possible to correct the flaw by implementing the following workaround: disable the 'decode' alias

Products

Eric Allman	Sendmail	5.66
		5.64

References

ISS X-Force ID: 126
CVE ID: 1999-0096 (see also: NVD)
CIAC Advisory: a-13 a-14
Mail List Post: http://securitydigest.org/zardoz/archive/122
http://securitydigest.org/zardoz/archive/134
http://securitydigest.org/zardoz/archive/135
Vendor Specific Advisory URL: http://sunsolve.sun.com/pub-cgi/retrieve.pl?doctype=coll&doc=secbull/122&type=0&nav=sec.sba
Other Advisory URL: http://www.cert.org/advisories/CA-93.16.sendmail.vulnerability
http://www.cert.org/advisories/CA-93.16a.sendmail.vulnerability.supplement

Tools & Filters

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Snort	659 672

Credit

Unknown or Incomplete

CVSSv2 Score

CVSSv2 Base Score = 5.0
Source: nvd.nist.gov | Generated: 2003-12-31 | Disagree?

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