YPOPs! up to 0.4 stack-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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7.1$0-$5k0.00

Summaryinfo

A vulnerability was found in YPOPs! up to 0.4. It has been classified as critical. This vulnerability affects unknown code. Performing a manipulation results in stack-based overflow. This vulnerability is cataloged as CVE-2004-1558. Furthermore, there is an exploit available.

Detailsinfo

A vulnerability was found in YPOPs! up to 0.4. It has been classified as critical. This affects an unknown code block. The manipulation with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Multiple stack-based buffer overflows in YPOPs! (aka YahooPOPS) 0.4 through 0.6 allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long (1) POP3 USER command or (2) SMTP request.

The bug was discovered 09/22/2004. The weakness was shared 09/27/2004 by Nima Majidi with Hat-Squad (Website). It is possible to read the advisory at hat-squad.com. This vulnerability is uniquely identified as CVE-2004-1558 since 02/20/2005. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are unknown but a public exploit is available.

A public exploit has been developed in Python and been published immediately after the advisory. The exploit is shared for download at securityfocus.com. It is declared as highly functional. The vulnerability was handled as a non-public zero-day exploit for at least 5 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 74185 (YahooPOPS! Multiple Remote Buffer Overflow Vulnerabilities).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Attack attempts may be identified with Snort ID 8705. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 4170.

The vulnerability is also documented in the databases at X-Force (17518), Exploit-DB (16818), SecurityFocus (BID 11256†), OSVDB (10366†) and Secunia (SA12660†). The entry VDB-82169 is related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.1

VulDB Base Score: 7.3
VulDB Temp Score: 7.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys ID: 🔍
Qualys Name: 🔍

MetaSploit ID: ypops_overflow1.rb
MetaSploit Name: YPOPS 0.6 Buffer Overflow
MetaSploit File: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍
Snort ID: 8705
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

SourceFire IPS: 🔍
ISS Proventia IPS: 🔍
PaloAlto IPS: 🔍

Timelineinfo

09/22/2004 🔍
09/27/2004 +5 days 🔍
09/27/2004 +0 days 🔍
09/27/2004 +0 days 🔍
09/27/2004 +0 days 🔍
09/28/2004 +1 days 🔍
09/28/2004 +0 days 🔍
12/31/2004 +93 days 🔍
02/13/2005 +44 days 🔍
02/20/2005 +7 days 🔍
02/27/2015 +3659 days 🔍
10/13/2025 +3881 days 🔍

Sourcesinfo

Advisory: hat-squad.com
Researcher: Nima Majidi
Organization: Hat-Squad
Status: Not defined
Confirmation: 🔍

CVE: CVE-2004-1558 (🔍)
GCVE (CVE): GCVE-0-2004-1558
GCVE (VulDB): GCVE-100-22839
X-Force: 17518
SecurityFocus: 11256 - YahooPOPS! Multiple Remote Buffer Overflow Vulnerabilities
Secunia: 12660 - YPOPs! POP3 and SMTP Service Buffer Overflow Vulnerabilities, Moderately Critical
OSVDB: 10366 - YahooPOPS POP3 Service USER Command Remote Overflow
SecurityTracker: 1011426
Vulnerability Center: 7044 - Buffer Overflow in YPOPs! 0.4 - 0.6 SMTP, High

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 02/27/2015 16:01
Updated: 10/13/2025 19:25
Changes: 02/27/2015 16:01 (81), 06/04/2019 16:42 (2), 04/09/2025 21:23 (21), 07/06/2025 17:14 (3), 10/13/2025 19:25 (1)
Complete: 🔍
Cache ID: 216::103

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