FreeBSD: VID-D0BE41FE-2A20-4633-B057-4E8B25C41780: bro -- array bounds and potential DOS issues
Description
Corelight reports:
Bro 2.5.5 primarily addresses security issues:
Fix array bounds checking in BinPAC: for arrays
that are fields within a record, the bounds check
was based on a pointer to the start of the record
rather than the start of the array field, potentially
resulting in a buffer over-read.
Fix SMTP command string comparisons: the number
of bytes compared was based on the user-supplied
string length and can lead to incorrect matches.
e.g. giving a command of "X" incorrectly matched
"X-ANONYMOUSTLS" (and an empty commands match
anything).
Address potential vectors for Denial of Service:
"Weird" events are now generally suppressed/sampled
by default according to some tunable parameters.
Improved handling of empty lines in several text
protocol analyzers that can cause performance issues
when seen in long sequences.
Add `smtp_excessive_pending_cmds' weird which
serves as a notification for when the "pending
command" queue has reached an upper limit and been
cleared to prevent one from attempting to slowly
exhaust memory.
Solution(s)
- freebsd-upgrade-package-bro
- Lightweight Endpoint Agent
- Live Dashboards
- Real Risk Prioritization
- IT-Integrated Remediation Projects
- Cloud, Virtual, and Container Assessment
- Integrated Threat Feeds
- Easy-to-Use RESTful API
- Automation-Assisted Patching
- Automated Containment
With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.
– Scott Cheney, Manager of Information Security, Sierra View Medical Center