CVE-1999-1405 : Detail

CVE-1999-1405

0.24%V3
Network
2001-09-12
02h00 +00:00
2024-08-01
17h11 +00:00
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CVE Descriptions

snap command in AIX before 4.3.2 creates the /tmp/ibmsupt directory with world-readable permissions and does not remove or clear the directory when snap -a is executed, which could allow local users to access the shadowed password file by creating /tmp/ibmsupt/general/passwd before root runs snap -a.

CVE Informations

Metrics

Metrics Score Severity CVSS Vector Source
V2 10 AV:N/AC:L/Au:N/C:C/I:C/A:C [email protected]

EPSS

EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.

EPSS Score

The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.

EPSS Percentile

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.

Exploit information

Exploit Database EDB-ID : 19300

Publication date : 1999-02-16 23h00 +00:00
Author : Larry W. Cashdollar
EDB Verified : Yes

source: https://www.securityfocus.com/bid/375/info The snap command is a diagnostic utlitiy for gathering system information on AIX platforms. It can only be executed by root, but it copies various system files into /tmp/ibmsupt/ under /tmp/ibmsupt/general/ you will find the passwd file with cyphertext. The danger here is if a system administrator executes snap -a as sometimes requested by IBM support while diagnosing a problem it defeats password shadowing. /tmp/ibmsupt is created with 755 permissions they may carry out a symlink attack and gain access to the password file. snap is a shell script which uses cp -p to gather system information. Data from /etc/security is gathered between lines 721 - 727. Seeing that snap uses the /tmp/ibmsupt/general directory someone may create the directory as a normal user (tested on on AIX 4.2.1). The user may then do a touch on /tmp/ibmsupt/general/passwd. Once the passwd file is created do tail -f /tmp/ibmsupt/general/passwd. If in another session someone loggs in as root and ran snap -a - this will cause the contents of the /etc/security/passwd to show up in tail command.

Products Mentioned

Configuraton 0

Ibm>>Aix >> Version 3.2.5

Ibm>>Aix >> Version 4.1

Ibm>>Aix >> Version 4.1.2

Ibm>>Aix >> Version 4.1.3

Ibm>>Aix >> Version 4.1.4

Ibm>>Aix >> Version 4.1.5

Ibm>>Aix >> Version 4.2

Ibm>>Aix >> Version 4.2.1

References

http://marc.info/?l=bugtraq&m=91954824614013&w=2
Tags : mailing-list, x_refsource_BUGTRAQ
http://www.securityfocus.com/bid/375
Tags : vdb-entry, x_refsource_BID
http://marc.info/?l=bugtraq&m=91936783009385&w=2
Tags : mailing-list, x_refsource_BUGTRAQ