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Descriptions du CVE
registrar in the HP resource monitor service allows local users to read and modify arbitrary files by renaming the original registrar.log log file and creating a symbolic link to the target file, to which registrar appends log information and sets the permissions to be world readable.
Informations du CVE
Métriques
| Métriques | Score | Gravité | CVSS Vecteur | Source |
|---|---|---|---|---|
| V2 | 3.6 | AV:L/AC:L/Au:N/C:P/I:P/A:N | nvd@nist.gov |
EPSS
EPSS est un modèle de notation qui prédit la probabilité qu'une vulnérabilité soit exploitée.
Score EPSS
Le modèle EPSS produit un score de probabilité compris entre 0 et 1 (0 et 100 %). Plus la note est élevée, plus la probabilité qu'une vulnérabilité soit exploitée est grande.
Percentile EPSS
Le percentile est utilisé pour classer les CVE en fonction de leur score EPSS. Par exemple, une CVE dans le 95e percentile selon son score EPSS est plus susceptible d'être exploitée que 95 % des autres CVE. Ainsi, le percentile sert à comparer le score EPSS d'une CVE par rapport à d'autres CVE.
Informations sur l'Exploit
Exploit Database EDB-ID : 20386
Date de publication : 2000-11-07 23h00 +00:00
Auteur : J.A. Gutierrez
EDB Vérifié : Yes
source: https://www.securityfocus.com/bid/1919/info
The registrar service that ships with version 10.20 (possibly others) of HP's HP-UX operating system contains a vulnerability that may allow a local user to read any file on the hosts filesystem. The service (which listens on tcp port 1712) writes to a log file, /etc/opt/resmon/log/registrar.log.
Default permissions on the /etc/opt/resmon/log directory allow users to overwrite the log file within it via "mv", which is normally created and written to by root when connections are made to the service.
After mv'ing an existing log file to another location, a malicious user can create a symbolic link to an arbitrary file they do not have read access to with the filename registrar.log in etc/opt/resmon/log. If any connections are made to the registrar service after this, the mode of the file pointed to will change to 0644 (world readable) and log data will be appended to it.
In addition to disclosing to the user restricted information, this may lead to an elevation of privileges for the local attacker.
$ uname -sr
HP-UX B.10.20
$ cd /etc/opt/resmon/log
$ mv registrar.log registrar.log.orig
$ ls -l /.sh_history
-rw------- 1 root sys 3316 Sep 20 15:22 /.sh_history
$ ln /.sh_history registrar.log
$ nc hpux.example.com 1712 < /etc/motd
$ ls -l /.sh_history
-rw-r--r-- 2 root sys 3605 Nov 8 09:45 /.sh_history
$ rm -f registrar.log
$ mv registrar.log.orig registrar.log
Products Mentioned
Configuraton 0
Hp>>Hp-ux >> Version 10.20
- Hp>>Hp-ux >> Version 10.20 (Open CPE detail)
