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Standard Taglibs CVE-2015-0254

HIGH
2015-03-09 secalert@redhat.com
7.5
CVSS 2.0 · NVD
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Vulnerability Assessment

Impact

CVSS score of 7.5 (HIGH). Attack characteristics: network attack vector, low complexity. EPSS exploitation probability: 3.81%.

Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the high-severity affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 3.8% exploitation probability (EPSS)

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AnalysisAI

Apache Standard Taglibs before 1.2.3 allows remote attackers to execute arbitrary code or conduct external XML entity (XXE) attacks via a crafted XSLT extension in a (1) <x:parse> or (2). Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affected Packages

maven org.apache.taglibs:taglibs-standard fix: 1.2.3
maven org.apache.taglibs:taglibs-standard-impl fix: 1.2.3

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 2 packages in maven

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Apache Standard Taglibs before 1.2.3 allows remote attackers to execute arbitrary code or conduct external XML entity (XXE) attacks via a crafted XSLT extension in a (1) <x:parse> or (2) <x:transform> JSTL XML tag. Affected products include: Apache Standard Taglibs, Canonical Ubuntu Linux. Version information: before 1.2.3.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.5 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Confidentiality
P
Integrity
P
Availability
P

DescriptionNVD

Apache Standard Taglibs before 1.2.3 allows remote attackers to execute arbitrary code or conduct external XML entity (XXE) attacks via a crafted XSLT extension in a (1) <x:parse> or (2) <x:transform> JSTL XML tag.

Threat Intelligence Overview

EPSS Score
3.8%
Top 12% exploitable
Data Quality
3 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 3.8%
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

42
Low Medium High Critical
KEV: 0
EPSS: +4
CVSS: +38
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

XML External Entity (XXE) attacks exploit XML parsers that process Document Type Definitions (DTDs) without proper restrictions.

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Affected Products (CPE)NVD

cpe:2.3:a:apache:standard_taglibs:*:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.10:*:*:*:*:*:*:*

References

Advisories & patches
ADVISORY http://mail-archives.apache.org/mod_mbox/tomcat-taglibs-user/201502.mbox/%3C82207A16-6348-4DEE-877E-F7B87292576A%40apache.org%3E ADVISORY https://vuldb.com/vuln/103996 ADVISORY https://vuldb.com/vuln/153554 ADVISORY https://vuldb.com/vuln/179105 ADVISORY https://vuldb.com/vuln/74371 REF http://lists.opensuse.org/opensuse-updates/2015-10/msg00033.html REF http://packetstormsecurity.com/files/130575/Apache-Standard-Taglibs-1.2.1-XXE-Remote-Command-Execution.html REF http://rhn.redhat.com/errata/RHSA-2015-1695.html REF http://rhn.redhat.com/errata/RHSA-2016-1838.html REF http://rhn.redhat.com/errata/RHSA-2016-1839.html REF http://rhn.redhat.com/errata/RHSA-2016-1840.html REF http://rhn.redhat.com/errata/RHSA-2016-1841.html REF http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html REF http://www.securityfocus.com/archive/1/534772/100/0/threaded REF http://www.securityfocus.com/bid/72809 REF http://www.securitytracker.com/id/1034934 REF http://www.ubuntu.com/usn/USN-2551-1 REF https://access.redhat.com/errata/RHSA-2016:1376 REF https://lists.apache.org/thread.html/8a20e48acb2a40be5130df91cf9d39d8ad93181989413d4abcaa4914%40%3Cdev.tomcat.apache.org%3E REF https://lists.apache.org/thread.html/f8e0814e11c7f21f42224b6de111cb3f5e5ab5c15b78924c516d4ec2%40%3Cdev.tomcat.apache.org%3E REF https://lists.apache.org/thread.html/r6c93d8ade3788dbc00f5a37238bc278e7d859f2446b885460783a16f%40%3Cpluto-dev.portals.apache.org%3E REF https://lists.apache.org/thread.html/rc1686f6196bb9063bf26577a21b8033c19c1a30e5a9159869c8f3d38%40%3Cpluto-dev.portals.apache.org%3E REF https://lists.apache.org/thread.html/re3b72cbb13e1dfe85c4a06959a3b6ca6d939b407ecca80db12b54220%40%3Cdev.tomcat.apache.org%3E REF https://lists.apache.org/thread.html/rf1179e6971bc46f0f68879a9a10cc97ad4424451b0889aeef04c8077%40%3Cpluto-scm.portals.apache.org%3E REF https://lists.apache.org/thread.html/rfc2bfd99c340dafd501676693cd889c1f9f838b97bdd0776a8f5557d%40%3Cdev.tomcat.apache.org%3E REF https://www.oracle.com//security-alerts/cpujul2021.html REF https://www.oracle.com/security-alerts/cpuapr2020.html

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