Bug 1786634 (CVE-2019-16226) - CVE-2019-16226 python-lmdb: out-of-bounds write in mdb_node_del in lib/mdb.c
Summary: CVE-2019-16226 python-lmdb: out-of-bounds write in mdb_node_del in lib/mdb.c
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2019-16226
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1786636 1786635
Blocks:
TreeView+ depends on / blocked
 
Reported: 2019-12-26 17:09 UTC by Guilherme de Almeida Suckevicz
Modified: 2019-12-26 20:09 UTC (History)
1 user (show)

Fixed In Version:
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Last Closed: 2019-12-26 20:09:26 UTC
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Description Guilherme de Almeida Suckevicz 2019-12-26 17:09:28 UTC 
An issue was discovered in py-lmdb 0.97. mdb_node_del does not validate a memmove in the case of an unexpected node->mn_hi, leading to an invalid write operation. NOTE: this outcome occurs when accessing a data.mdb file supplied by an attacker.

Reference:
https://github.com/TeamSeri0us/pocs/tree/master/lmdb/lmdb%20memory%20corruption%20vuln
Comment 1 Guilherme de Almeida Suckevicz 2019-12-26 17:10:09 UTC 
Created python-lmdb tracking bugs for this issue:

Affects: epel-all [bug 1786636]
Affects: fedora-all [bug 1786635]
Comment 2 Product Security DevOps Team 2019-12-26 20:09:26 UTC 
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.
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