oss-sec mailing list archives

Re: CVE Request: dropbear sshd daemon 2013.59 release


From: Kurt Seifried <kseifried () redhat com>
Date: Thu, 10 Oct 2013 23:41:27 -0600

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On 10/10/2013 07:27 AM, Marcus Meissner wrote:
Hi folks, hi Matt,

https://matt.ucc.asn.au/dropbear/CHANGES seems to have two CVE
worth entries.

Version 2013.59 - Friday 4 October 2013

has this changes entry: - Limit the size of decompressed payloads,
avoids memory exhaustion denial of service Thanks to Logan Lamb for
reporting and investigating it

Source code fix for this is seems to be: 
https://secure.ucc.asn.au/hg/dropbear/rev/0bf76f54de6f

Please use CVE-2013-4421 for this issue.


It also has this changes entry which might need one: - Avoid
disclosing existence of valid users through inconsistent delays 
Thanks to Logan Lamb for reporting

https://secure.ucc.asn.au/hg/dropbear/rev/a625f9e135a4

Matt, if you are interested in requesting CVEs in the future for
security relevant fixes, feel free to contact us. (Kurt, I looked
for your howto, but my googlefu today is weak.)

Ciao, Marcus

This one seems to not be as exploitable or did I misread the follow up
emails?



- -- 
Kurt Seifried Red Hat Security Response Team (SRT)
PGP: 0x5E267993 A90B F995 7350 148F 66BF 7554 160D 4553 5E26 7993
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