bugGNU GRUB - Bugs: bug #42635, minilzo: Embedded LZO...


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bug #42635: minilzo: Embedded LZO vulnerability (CVE-2014-4607)

Submitter:  Kristian Fiskerstrand <kristianf>
Submitted:  Fri 27 Jun 2014 04:06:24 PM UTC
Category:  Security Severity:  Major
Priority:  5 - Normal Item Group:  None
Status:  None Privacy:  Public
Assigned to:  None Originator Name: 
Open/Closed:  Open Release:  Git master
Release:  Reproducibility:  None
Planned Release:  2.02

Fri 27 Jun 2014 04:48:35 PM UTC, comment #1: 

May be a problem when using btrfs with lzo compression. But it's unlikely. If attacker can write to files used by GRUB, you have a bigger problems.
In cases when signatures used (if disk replacement is a possible attack scenario), the signatures are checked before the decompression, so not a problem either.
Nevertheless, I'll correct the mistake, thank you for forwarding this.

Vladimir Serbinenko <phcoder>
Group administrator
Fri 27 Jun 2014 04:06:24 PM UTC, original submission:  


A security issue was raised[0] regarding implementation of LZO which is fixed in Oberhumer's LZO version 2.07 and allocated CVE-2014-4607. Further it is suggested that grub might be affected to this vulnerability by embedding a version of the affected code (minilzo)[1]. It would be appreciated to get a comment on the applicability and a possible fix for this issue.

[0] http://seclists.org/oss-sec/2014/q2/665
[1] http://seclists.org/oss-sec/2014/q2/676

Kristian Fiskerstrand <kristianf>


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    Follows 1 latest change.

    Date Changed by Updated Field Previous Value => Replaced by
    2016-03-02 phcoder Planned ReleaseNone 2.02

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