VAR-200607-0420
Vulnerability from variot - Updated: 2023-12-18 13:45Multiple stack-based buffer overflows in Tumbleweed Email Firewall (EMF) allow remote attackers to execute arbitrary code via an email attachment with an LHA archive that contains a (1) file or (2) directory with a long LHA extended header, (3) an LHA archive in which the "temporary pathname" field for decompressed output is greater than 2 bytes, or (4) an LHA archive with a long filename. Tumbleweed MailGate Email Firewall is prone to multiple buffer-overflow vulnerabilities in its LHA processing routines. A successful attack can allow a remote attacker to corrupt process memory by triggering various overflow conditions in the LHA processing engine. This may lead to arbitrary code execution in the context of the MMSDecompose (a process of the EMF Decomposer component), resulting in a full compromise. These vulnerabilities reportedly affect all versions of the Tumbleweed MailGate Email Firewall.
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TITLE: Tumbleweed Email Firewall LHA File Parsing Vulnerabilities
SECUNIA ADVISORY ID: SA21194
VERIFY ADVISORY: http://secunia.com/advisories/21194/
CRITICAL: Highly critical
IMPACT: System access
WHERE:
From remote
SOFTWARE: MailGate Email Firewall 6.x http://secunia.com/product/11136/ Tumbleweed Messaging Management System (MMS) 5.x http://secunia.com/product/3588/
DESCRIPTION: Ryan Smith has reported three vulnerabilities in Tumbleweed Email Firewall, which can be exploited by malicious people to compromise a vulnerable system.
1) A boundary error within the processing of LHA extended-header filenames can be exploited to cause a stack-based buffer overflow.
2) A boundary error within the processing of LHA extended-header directory names can be exploited to cause a stack-based buffer overflow.
Successful exploitation of the vulnerabilities allows execution of arbitrary code when an e-mail with a specially crafted attachment is processed.
SOLUTION: According to the researcher, the vendor will not be releasing a patch. Instead, the vendor has reportedly suggested a workaround (contact the vendor for more information).
PROVIDED AND/OR DISCOVERED BY: Ryan Smith
ORIGINAL ADVISORY: http://www.hustlelabs.com/advisories/04072006_tweed.pdf
About: This Advisory was delivered by Secunia as a free service to help everybody keeping their systems up to date against the latest vulnerabilities.
Subscribe: http://secunia.com/secunia_security_advisories/
Definitions: (Criticality, Where etc.) http://secunia.com/about_secunia_advisories/
Please Note: Secunia recommends that you verify all advisories you receive by clicking the link. Secunia NEVER sends attached files with advisories. Secunia does not advise people to install third party patches, only use those supplied by the vendor.
Unsubscribe: Secunia Security Advisories http://secunia.com/sec_adv_unsubscribe/?email=packet%40packetstormsecurity.org
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.