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Vulnerability record · CVE-2011-1843 · published 3 May 2011

CVE-2011-1843: Banu tinyproxy vulnerability

Banu · Tinyproxy

Integer overflow in conf.c in Tinyproxy before 1.8.3 might allow remote attackers to bypass intended access restrictions in opportunistic circumstances via a TCP connection, related to improper handling of invalid port numbers.

6.8 CVSS 2.0 Medium EPSS 1.3% · top 29.8% CWE-189 · CWE-189
6.8CVSS 2.0 base score
1.3%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

Integer overflow in conf.c in Tinyproxy before 1.8.3 might allow remote attackers to bypass intended access restrictions in opportunistic circumstances via a TCP connection, related to improper handling of invalid port numbers.

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

Affected products

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

References

LinkTags
http://www.securityfocus.com/bid/47715
https://banu.com/bugzilla/show_bug.cgi?id=90 ExploitPatch
https://banu.com/cgit/tinyproxy/diff/?id=97b9984484299b2ce72f8f4fc3706dab8a3a8439 Patch
http://www.securityfocus.com/bid/47715
https://banu.com/bugzilla/show_bug.cgi?id=90 ExploitPatch
https://banu.com/cgit/tinyproxy/diff/?id=97b9984484299b2ce72f8f4fc3706dab8a3a8439 Patch

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Related vulnerabilities

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

5.0CVE-2012-3505Banu tinyproxy vulnerabilityTinyproxy 1.8.3 and earlier allows remote attackers to cause a denial of service (CPU and memory consumption) via (1) a large number of headers or (2…EPSS 7.3%2.6CVE-2011-1499Banu tinyproxy vulnerabilityacl.c in Tinyproxy before 1.8.3, when an Allow configuration setting specifies a CIDR block, permits TCP connections from all IP addresses, which mak…EPSS 1.8%8.4CVE-2013-2094Linux Kernel perf_swevent_init Integer Type Flaw Enables Local Privilege EscalationThe perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, allowing a local user to…KEVEPSS 48%analysed

Source: NIST National Vulnerability Database (record CVE-2011-1843), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.