This indicates an attack attempt against a Denial of Service vulnerability in Cisco WebEx Player.
The vulnerability is due to an error when the vulnerable software handles a maliciously crafted file. A remote attacker may be able to exploit this to cause a denial of service condition on a affect system, via a crafted file.
Cisco WebEx Business Suite (WBS30) client builds prior to T30.20
Cisco WebEx Business Suite (WBS31) client builds prior to T31.20
Cisco WebEx Business Suite (WBS32) client builds prior to T32.7
Cisco WebEx Meetings with client builds prior to T32.7
Cisco WebEx Meeting Server builds prior to 2.7MR3
Denial of Service: Remote attackers can crash vulnerable systems.
Apply the most recent upgrade or patch from the vendor.