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Vulnerability record · CVE-2001-1068 · published 31 August 2001

CVE-2001-1068: Qualcomm qpopper vulnerability

Qualcomm · Qpopper

qpopper 4.01 with PAM based authentication on Red Hat systems generates different error messages when an invalid username is provided instead of a valid name, which allows remote attackers to determine valid usernames on the system.

5.0 CVSS 2.0 Medium EPSS 1.1% · top 35.5%
5.0CVSS 2.0 base score
1.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

qpopper 4.01 with PAM based authentication on Red Hat systems generates different error messages when an invalid username is provided instead of a valid name, which allows remote attackers to determine valid usernames on the system.

AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://archives.neohapsis.com/archives/bugtraq/2001-08/0363.html ExploitVendor Advisory
http://www.securityfocus.com/bid/3242 PatchVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/7047
http://archives.neohapsis.com/archives/bugtraq/2001-08/0363.html ExploitVendor Advisory
http://www.securityfocus.com/bid/3242 PatchVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/7047

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2003-0143Qualcomm qpopper vulnerabilityThe pop_msg function in qpopper 4.0.x before 4.0.5fc2 does not null terminate a message buffer after a call to Qvsnprintf, which could allow authenti…EPSS 8.6%10.0CVE-2001-1046Qualcomm qpopper vulnerabilityBuffer overflow in qpopper (aka qpop or popper) 4.0 through 4.0.2 allows remote attackers to gain privileges via a long username.EPSS 1.9%10.0CVE-1999-0822Qualcomm qpopper vulnerabilityBuffer overflow in Qpopper (qpop) 3.0 allows remote root access via AUTH command.EPSS 4.9%9.8CVE-1999-0006Qualcomm qpopper out-of-bounds read vulnerabilityBuffer overflow in POP servers based on BSD/Qualcomm's qpopper allows remote attackers to gain root access using a long PASS command.EPSS 12%7.5CVE-2000-0442Qualcomm qpopper vulnerabilityQpopper 2.53 and earlier allows local users to gain privileges via a formatting string in the From: header, which is processed by the euidl command.EPSS 3.3%7.2CVE-2000-0096Qualcomm qpopper vulnerabilityBuffer overflow in qpopper 3.0 beta versions allows local users to gain privileges via a long LIST command.EPSS 0.51%5.5CVE-2000-1198Qualcomm qpopper vulnerabilityqpopper POP server creates lock files with predictable names, which allows local users to cause a denial of service for other users (lack of mail acc…EPSS 0.35%5.0CVE-2002-0454Qualcomm qpopper vulnerabilityQpopper (aka in.qpopper or popper) 4.0.3 and earlier allows remote attackers to cause a denial of service (CPU consumption) via a very large string, …EPSS 5.2%

Source: NIST National Vulnerability Database (record CVE-2001-1068), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.