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Vulnerability of Tor: memory leak via circpad_setup_machine_on_circ

Synthesis of the vulnerability 

An attacker can create a memory leak via circpad_setup_machine_on_circ() of Tor, in order to trigger a denial of service.
Vulnerable products: openSUSE Leap, SLES.
Severity of this weakness: 2/4.
Creation date: 30/03/2020.
Références of this bulletin: CVE-2020-10593, openSUSE-SU-2020:0406-1, openSUSE-SU-2020:0428-1, openSUSE-SU-2020:1970-1, VIGILANCE-VUL-31902.

Description of the vulnerability 

An attacker can create a memory leak via circpad_setup_machine_on_circ() of Tor, in order to trigger a denial of service.
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This computer weakness bulletin impacts software or systems such as openSUSE Leap, SLES.

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

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

An attacker with a expert ability can exploit this threat announce.

Solutions for this threat 

openSUSE Leap 15.1: new tor packages.
New packages are available:
  openSUSE Leap 15.1: tor 0.3.5.10-lp151.2.3.1

openSUSE, SUSE LE: new tor packages.
New packages are available:
  openSUSE Leap 15.1: tor 0.3.5.12-lp151.2.6.1
  openSUSE Leap 15.2: tor 0.4.4.6-lp152.2.3.1
  SUSE LE 15 SP1: tor 0.3.5.12-bp151.3.6.1
  SUSE LE 15 SP2: tor 0.4.4.6-bp152.2.3.1

SUSE LE 15 SP1: new tor packages.
New packages are available:
  SUSE LE 15 SP1: tor 0.3.5.10-bp151.3.3.1
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

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Vigil@nce provides cybersecurity bulletins. The Vigil@nce team tracks computer vulnerabilities impacting systems and applications.