Last Modified: Oct 07, 2023
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
10.2.4, 11.6.0, 11.6.1, 11.6.2, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3, 12.1.0 HF1, 12.1.0 HF2, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2
Fixed In:
12.1.0, 12.0.0
Opened: Jun 27, 2015 Severity: 3-Major
Whitespace used as a keep alive between messages on TCP may produce a core within the SIP parser.
Incompatibility with some SIP clients and servers.
Some SIP clients and servers will transmit packets containing whitespace to keep a TCP connection alive. These whitespace packets are ignored by the SIP parser. In some cases, the parser may retain a reference to released data after receiving and ignoring the white space characters.
none
Fix clears references to released memory when the parser discards whitespace.