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Vulnerability of PostgreSQL: denial of service via ALTER DEPENDS ON EXTENSION

Synthesis of the vulnerability 

An attacker can trigger a fatal error via ALTER DEPENDS ON EXTENSION of PostgreSQL, in order to trigger a denial of service.
Vulnerable systems: Debian, PostgreSQL, Ubuntu.
Severity of this threat: 2/4.
Creation date: 13/02/2020.
Références of this weakness: CERTFR-2020-AVI-091, CVE-2020-1720, DLA-2105-1, DSA-4622-1, DSA-4623-1, USN-4282-1, VIGILANCE-VUL-31598.

Description of the vulnerability 

An attacker can trigger a fatal error via ALTER DEPENDS ON EXTENSION of PostgreS...
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This weakness note impacts software or systems such as Debian, PostgreSQL, Ubuntu.

Our Vigil@nce team determined that the severity of this threat note is medium.

The trust level is of type confirmed by the editor, with an origin of user account.

An attacker with a expert ability can exploit this computer weakness.

Solutions for this threat 

This vulnerability workaround will be public soon.
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