CVE-2016-5300
The XML parser in Expat does not use sufficient entropy for hash initialization, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted identifiers in an XML document.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (6.54%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The XML parser in Expat does not use sufficient entropy for hash initialization, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted identifiers in an XML document. NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-0876.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 6.54% probability · 93th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-399
- Affected
- canonical/ubuntu linux · debian/debian linux · libexpat project/libexpat · google/android
- Source
- cve@mitre.org
References
- http://www.debian.org/security/2016/dsa-3597Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/06/04/4Mailing List
- http://www.openwall.com/lists/oss-security/2016/06/04/5Mailing List
- http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.htmlPatch, Third Party Advisory
- http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.htmlThird Party Advisory
- http://www.securityfocus.com/bid/91159Third Party Advisory, VDB Entry
- http://www.ubuntu.com/usn/USN-3010-1Third Party Advisory
- https://kc.mcafee.com/corporate/index?page=content&id=SB10365
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
- https://security.gentoo.org/glsa/201701-21Third Party Advisory
- https://source.android.com/security/bulletin/2016-11-01.htmlThird Party Advisory
- https://www.tenable.com/security/tns-2016-20Third Party Advisory
- http://www.debian.org/security/2016/dsa-3597Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/06/04/4Mailing List
- http://www.openwall.com/lists/oss-security/2016/06/04/5Mailing List
- http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.htmlPatch, Third Party Advisory
- http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.htmlThird Party Advisory
- http://www.securityfocus.com/bid/91159Third Party Advisory, VDB Entry
- http://www.ubuntu.com/usn/USN-3010-1Third Party Advisory
- https://kc.mcafee.com/corporate/index?page=content&id=SB10365
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
- https://security.gentoo.org/glsa/201701-21Third Party Advisory
- https://source.android.com/security/bulletin/2016-11-01.htmlThird Party Advisory
- https://www.tenable.com/security/tns-2016-20Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.