Vulnerability Report

CVE-2021-38165

Title: Lynx mishandles URI userinfo leading to cleartext credential disclosure

Information Disclosure

Proof Of Concept

No public PoC currently indexed for CVE-2021-38165.

CWE Category CWE-522
Published Date Aug 07, 2021
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 5.3 CVSS v3.1
Exploit Probability (EPSS)
4.07%

Vulnerability Summary

CVE-2021-38165: Lynx through 2.8.9 mishandles the userinfo subcomponent of a URI, which allows remote attackers to discover cleartext credentials because they may appear in SNI data.

Impacted Vendors

U
university_of_kansas 1
L
lynx_project 1
I
invisible-island 1

Reference Links

http://www.openwall.com/lists/oss-security/2021/08/07/11 http://www.openwall.com/lists/oss-security/2021/08/07/12 http://www.openwall.com/lists/oss-security/2021/08/07/9 https://bugs.debian.org/991971 https://github.com/w3c/libwww/blob/f010b4cc58d32f34b162f0084fe093f7097a61f0/Library/src/HTParse.c#L118 https://lists.debian.org/debian-lts-announce/2021/08/msg00010.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7YMUHFJJWTZ6HBHTYXVDPNZINGGURHDW/ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K6PZF7JNTFCOJ62HXZG4Q2NEHSZ6IO2V/ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VKNK7GQBJBUBMJVNKVC7RTCYWUYMFJQW/ https://lynx.invisible-island.net/current/CHANGES.html https://www.debian.org/security/2021/dsa-4953 https://www.openwall.com/lists/oss-security/2021/08/07/1 https://www.openwall.com/lists/oss-security/2021/08/07/11 http://www.openwall.com/lists/oss-security/2021/08/07/11 http://www.openwall.com/lists/oss-security/2021/08/07/12 http://www.openwall.com/lists/oss-security/2021/08/07/9 https://bugs.debian.org/991971 https://github.com/w3c/libwww/blob/f010b4cc58d32f34b162f0084fe093f7097a61f0/Library/src/HTParse.c#L118 https://lists.debian.org/debian-lts-announce/2021/08/msg00010.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7YMUHFJJWTZ6HBHTYXVDPNZINGGURHDW/ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K6PZF7JNTFCOJ62HXZG4Q2NEHSZ6IO2V/ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VKNK7GQBJBUBMJVNKVC7RTCYWUYMFJQW/ https://lynx.invisible-island.net/current/CHANGES.html https://www.debian.org/security/2021/dsa-4953 https://www.openwall.com/lists/oss-security/2021/08/07/1 https://www.openwall.com/lists/oss-security/2021/08/07/11
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
5.3
Attack Vector
NETWORK
Complexity
HIGH
Privileges
N/A
Interaction
REQUIRED
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
CVSS v2.0
Source Entity [email protected]
Severity LOW
2.6
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:H/Au:N/C:P/I:N/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2021-38165 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity HIGH
Privileges N/A
Interaction REQUIRED
CVSS Vector String CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

Affected Stack

No specific products linked.