Dec 23, 2021
Overview of Log4j vuln (as of 16 December 2021)
Why is it a big deal? (impact/criticality/risk)
Talk about patching vs. mitigation
why wasn’t this given the same visibility in 2009? Because it’s Oracle or Java?
Good callout is building slides to brief org leadership, detections, and other educational tools.
Vuln fatigue (Java vulns in 2009 and pretty much forever cause us fatigue)
Are there other technologies like log4j that prop up the entire world, and we just don’t know?
Egress traffic (discussed at length on twitter, what problems it solve?)
Latest: https://www.theregister.com/2021/12/14/apache_log4j_v2_16_jndi_disabled_default/ - apache removed JDNI functionality
https://www.reddit.com/r/blueteamsec/comments/rd38z9/log4j_0day_being_exploited/ <- great aggregation
Lots of discussion about “SBOM solving the issue”. @K8em0 weighs in https://twitter.com/k8em0/status/1469437490691932164
https://gist.github.com/SwitHak/b66db3a06c2955a9cb71a8718970c592 -list of advisories for log4j
https://twitter.com/DannyThomas/status/1469709039911129088 (holy hell, 2009?!?)
2009 in fact, #CVE-2009-1094,
then a bypass was fixed in CVE-2018-3149: https://bugzilla.redhat.com/show_bug.cgi?id=1639834.
That's when the JDK was fully protected, but other implementations
You can use a point & click canarytoken from https://canarytokens.org to help test for the #log4j / #Log4Shell issue.
1) visit https://canarytokens.org;
2) choose the Log4shell token;
3) enter the email address you wish to be notified at;
4) copy/use the returned string...
Discussed in 2016 at Blackhat: https://twitter.com/th3_protoCOL/status/1469644923028656130
#Log4Shell attack vector
was known since 2016…
Just got off phone with a client. Log4j is in their network. Vendor claims patch will be available next release... which is multiple months from now. Here's what you do if you're in this situation. 1. Keep calm. There's no need to panic. 2. Carefully read this thread.
When dealing with attacks like this you should remember the acronym IMMA.
I = Isolate
M = Minimize
M = Monitor
A = Active Defense
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