Directory traversal vulnerability in mod/tools/em/class.em_unzip.php in the unzip library in TYPO3 4.2.x before 4.2.16, 4.3.x before 4.3.9,
Directory traversal vulnerability in mod/tools/em/class.em_unzip.php in the unzip library in TYPO3 4.2.x before 4.2.16, 4.3.x before 4.3.9, and 4.4.x before 4.4.5 allows remote attackers to write arbitrary files via unspecified vectors.
- Published
- May 21, 2012
- Updated
- Jun 16, 2026
- EPSS
- 2.6% · 84th percentile
- CWE
- CWE-22
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Report tools
Action score
21
Monitor
Low priority for now.
- CVSS
- 20 / 40 · 5.0 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 2.6%
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
| Vendor | Product | CPE |
|---|---|---|
| typo3 | typo3 | cpe:2.3:a:typo3:typo3 |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- typo3 typo34.2.0
- typo3 typo34.2.1
- typo3 typo34.2.10
- typo3 typo34.2.11
- typo3 typo34.2.12
- typo3 typo34.2.13
- typo3 typo34.2.14
- typo3 typo34.2.15
- typo3 typo34.2.2
- typo3 typo34.2.3
- typo3 typo34.2.4
- typo3 typo34.2.5
- typo3 typo34.2.6
- typo3 typo34.2.7
- typo3 typo34.2.8
- typo3 typo34.2.9
- typo3 typo34.3.0
- typo3 typo34.3.1
- typo3 typo34.3.2
- typo3 typo34.3.3
Same product
typo3: all recordsOther highest-scoring records for the same primary product.
- CVE-2013-6288Unspecified vulnerability in the Apache Solr for TYPO3 (solr) extension before 2.8.3 for TYPO3 has unknown impact and remote attack vectors,41Plan
- CVE-2013-5303Unspecified vulnerability in the Store Locator (locator) extension before 3.1.5 for TYPO3 has unknown impact and remote attack vectors, rela41Plan
- CVE-2010-4889Unspecified vulnerability in the Tiny Market (hm_tinymarket) extension 0.5.4 and earlier for TYPO3 allows attackers to execute arbitrary cod41Plan
- CVE-2009-4952Directory traversal vulnerability in the Directory Listing (dir_listing) extension 1.1.0 and earlier for TYPO3 allows remote attackers to ha41Plan
- CVE-2009-3819Unspecified vulnerability in the Random Images (maag_randomimage) extension 1.6.4 and earlier for TYPO3 allows remote attackers to execute a41Plan
- CVE-2009-0258The Indexed Search Engine (indexed_search) system extension in TYPO3 4.0.0 through 4.0.9, 4.1.0 through 4.1.7, and 4.2.0 through 4.2.3 allow41Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- P · data or configuration can be modified
- Availability
- none
- Attack complexity
- Low
- Confidentiality impact
- None
- Integrity impact
- P
- Availability impact
- None
Weakness class (CWE)
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')CVSS vector
AV:N/AC:L/Au:N/C:N/I:P/A:N
nvd-primary
Root cause
A user-supplied file name is joined with the allowed directory, but the result is never checked to confirm it is still inside that directory.
The bug in code
The whole CWE-22 classA representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.
Vulnerable
const file = path.join(ROOT, req.query.name);res.sendFile(file);Fixed
const file = path.resolve(ROOT, req.query.name);if (!file.startsWith(ROOT + path.sep)) { return res.sendStatus(400);}res.sendFile(file);Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Path TraversalCAPEC-126likelihood: High · Very High
- Using Slashes and URL Encoding Combined to Bypass Validation LogicCAPEC-64likelihood: High · High
- Manipulating Web Input to File System CallsCAPEC-76likelihood: High · Very High
- Using Escaped Slashes in Alternate EncodingCAPEC-78likelihood: High · High
- Using Slashes in Alternate EncodingCAPEC-79likelihood: High · High
ATT&CK techniques
—
Change log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- bugs.typo3.org/view.php?id=16362
- secunia.com/advisories/35770
- securesystems.ca/advisory.php?id=2010-001
- typo3.org/teams/security/security-bulletins/typo3-core/typo3-sa-2010-022/
- www.openwall.com/lists/oss-security/2011/01/13/2
- www.openwall.com/lists/oss-security/2012/05/10/7
- www.openwall.com/lists/oss-security/2012/05/11/3
- www.openwall.com/lists/oss-security/2012/05/12/5
- www.osvdb.org/70119
- www.securityfocus.com/bid/45470
- exchange.xforce.ibmcloud.com/vulnerabilities/64180
Vendor advisories and official records. Exploit/PoC links are deliberately left out.