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Bug 1566749 - (CVE-2017-18258) CVE-2017-18258 libxml2: denial of service in xz_head function in xzlib.c
CVE-2017-18258 libxml2: denial of service in xz_head function in xzlib.c
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
low Severity low
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Assigned To: Red Hat Product Security
impact=low,public=20170907,reported=2...
: Security
Depends On: 1566750 1566751 1579211
Blocks: 1566752
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Reported: 2018-04-12 19:04 EDT by Laura Pardo
Modified: 2018-07-31 17:44 EDT (History)
17 users (show)

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Fixed In Version: libxml2 2.9.6
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Description Laura Pardo 2018-04-12 19:04:07 EDT 
A flaw was found in libxml2 before 2.9.6. The xz_head function in xzlib.c in allows remote attackers to cause a denial of service (memory consumption) via a crafted LZMA file, because the decoder functionality does not restrict memory usage to what is required for a legitimate file.


References:
https://git.gnome.org/browse/libxml2/commit/?id=e2a9122b8dde53d320750451e9907a7dcb2ca8bb
Comment 1 Laura Pardo 2018-04-12 19:04:37 EDT 
Created mingw-libxml2 tracking bugs for this issue:

Affects: fedora-all [bug 1566751]
Affects: epel-7 [bug 1566750]
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