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CVE-2019-18197

Good to know:

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Date: October 18, 2019

In xsltCopyText in transform.c in libxslt 1.1.33, a pointer variable isn't reset under certain circumstances. If the relevant memory area happened to be freed and reused in a certain way, a bounds check could fail and memory outside a buffer could be written to, or uninitialized data could be disclosed.

Language: HTML

Severity Score

Related Resources (25)

https://security.netapp.com/advisory/ntap-20191031-0004/
https://www.oracle.com/security-alerts/cpuapr2020.html
https://security.netapp.com/advisory/ntap-20191031-0004
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00062.html
https://access.redhat.com/errata/RHSA-2020:0514
https://usn.ubuntu.com/4164-1
https://usn.ubuntu.com/4164-1/
https://github.com/sparklemotion/nokogiri/issues/1943
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15746
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15768
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15914
https://access.redhat.com/security/cve/CVE-2019-18197
http://www.openwall.com/lists/oss-security/2019/11/17/2
https://nvd.nist.gov/vuln/detail/CVE-2019-18197
https://security.netapp.com/advisory/ntap-20200416-0004
https://lists.debian.org/debian-lts-announce/2019/10/msg00037.html
https://security.netapp.com/advisory/ntap-20200416-0004/
http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00010.html
https://gitlab.gnome.org/GNOME/libxslt/commit/2232473733b7313d67de8836ea3b29eec6e8e285
https://github.com/sparklemotion/nokogiri
http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00015.html
http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00025.html
https://github.com/sparklemotion/nokogiri/blob/01ab95f3e37429ed8d3b380a8d2f73902eb325d9/CHANGELOG.md?plain=1#L934
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/nokogiri/CVE-2019-18197.yml
https://www.mend.io/vulnerability-database/CVE-2019-18197

Severity Score

Weakness Type (CWE)

Use After Free

CWE-416

Use of Uninitialized Resource

CWE-908

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): HIGH
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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