Quantum Secular Labs / Blog / Advisories

CVE-2009-1095: Sun JDK: Buffer overflow

CVE-2009-1095 has a CVSS v2 base score of 10.0 (the maximum on that scale) and affects Sun JDK. Per its scoring, it can be exploited over the network, without authentication. The scored impact on confidentiality, integrity and availability is the highest available.

Vulnerability description

Integer overflow in unpack200 in Java SE Development Kit (JDK) and Java Runtime Environment (JRE) 5.0 Update 17 and earlier, and 6 Update 12 and earlier, allows remote attackers to access files or execute arbitrary code via a JAR file with crafted Pack200 headers.

Severity breakdown

CVSS v2.0 10.0: AV:N/AC:L/Au:N/C:C/I:C/A:C

  • Access vector: Network. Exploitable remotely over the network.
  • Access complexity: Low. No special conditions are required.
  • Authentication: None. No authentication is needed.
  • Confidentiality impact: Complete. Total information disclosure.
  • Integrity impact: Complete. Total loss of integrity.
  • Availability impact: Complete. Total shutdown of the component.

Affected products

  • Sun JDK: up to and including 1.5.0; 1.5.0; 1.5.0 update1; 1.5.0 update10; 1.5.0 update11; 1.5.0 update11_b03; 1.5.0 update12; 1.5.0 update13; 1.5.0 update14; 1.5.0 update15; 1.5.0 update16; 1.5.0 update2
  • Sun JRE: up to and including 1.5.0; 1.5.0; 1.5.0 update1; 1.5.0 update10; 1.5.0 update11; 1.5.0 update12; 1.5.0 update13; 1.5.0 update14; 1.5.0 update15; 1.5.0 update16; 1.5.0 update2; 1.5.0 update3

References