CVE-2021-38165
published 2021-08-07CVE-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…
PriorityP434medium5.3CVSS 3.1
AVNACHPRNUIRSUCHINAN
EPSS
4.07%
89.7th percentile
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.
Affected
11 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | lynx | < lynx 2.9.0dev.6-3 (bookworm) | lynx 2.9.0dev.6-3 (bookworm) |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| lynx_project | lynx | <= 2.8.9 | — |
| lynx_project | lynx | >= 0 < 2.9.0dev.6-3~deb11u1 | 2.9.0dev.6-3~deb11u1 |
| lynx_project | lynx | >= 0 < 2.9.0dev.6-3 | 2.9.0dev.6-3 |
| lynx_project | lynx | >= 0 < 2.9.0dev.6-3 | 2.9.0dev.6-3 |
| lynx_project | lynx | >= 0 < 2.9.0dev.6-3 | 2.9.0dev.6-3 |
CVSS provenance
nvdv3.15.3MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
nvdv2.02.6LOWAV:N/AC:H/Au:N/C:P/I:N/A:N
osv7.5HIGH
vendor_ubuntu7.5HIGH
vendor_debian5.3MEDIUM
vendor_redhat5.3MEDIUM
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GHSA
GHSA-88f3-hp86-v36f: Lynx through 2
ghsa_unreviewed·2022-05-24
CVE-2021-38165 [HIGH] CWE-522 GHSA-88f3-hp86-v36f: Lynx through 2
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.
OSV
CVE-2021-38165: Lynx through 2
osv·2021-08-07·CVSS 5.3
CVE-2021-38165 [MEDIUM] CVE-2021-38165: Lynx through 2
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.
OSV
lynx vulnerabilities
osv·2021-03-15·CVSS 7.5
CVE-2016-9179 [HIGH] lynx vulnerabilities
lynx vulnerabilities
It was discovered that Lynx incorrectly handled certain URLs. A remote attacker
could possibly use this issue to obtain sensitive information or other
unspecified impact. This issue only affected Ubuntu 16.04 ESM.
(CVE-2016-9179)
It was discovered that Lynx incorrectly handled certain HTML files. A remote
attacker could possibly use this issue to obtain sensitive information.
This issue only affected Ubuntu 16.04 ESM. (CVE-2017-1000211)
Thorsten Glaser discovered that Lynx mishandles the userinfo subcomponents of
a URI. An attacker monitoring the network could discover cleartext
credentials because they may appear in SNI data. (CVE-2021-38165)
Red Hat
lynx: Disclosure of HTTP authentication credentials via SNI data
vendor_redhat·2021-08-07·CVSS 5.3
CVE-2021-38165 [MEDIUM] CWE-522 lynx: Disclosure of HTTP authentication credentials via SNI data
lynx: Disclosure of HTTP authentication credentials via SNI data
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.
A flaw was found in the way lynx parsed URLs with userinfo part containing authentication credentials. These credentials were included in the Server Name Indication (SNI) TLS extension data and sent unencrypted during the TLS connection handshake. This could lead to exposure of authentication credentials to attackers able to eavesdrop on network connection between the lynx browser and the server.
Package: lynx (Red Hat Enterprise Linux 6) - Not affected
Package: lynx (Red Hat Enterprise Linux 7) - Out of support scope
Package: lynx (Red Hat Enterprise Linux
Ubuntu
Lynx vulnerabilities
vendor_ubuntu·2021-03-15·CVSS 7.5
CVE-2017-1000211 [HIGH] Lynx vulnerabilities
Title: Lynx vulnerabilities
Summary: Several security issues were fixed in Lynx.
It was discovered that Lynx incorrectly handled certain URLs. A remote attacker
could possibly use this issue to obtain sensitive information or other
unspecified impact. This issue only affected Ubuntu 16.04 ESM.
(CVE-2016-9179)
It was discovered that Lynx incorrectly handled certain HTML files. A remote
attacker could possibly use this issue to obtain sensitive information.
This issue only affected Ubuntu 16.04 ESM. (CVE-2017-1000211)
Thorsten Glaser discovered that Lynx mishandles the userinfo subcomponents of
a URI. An attacker monitoring the network could discover cleartext
credentials because they may appear in SNI data. (CVE-2021-38165)
Instructions: In general, a standard system update will make a
Debian
CVE-2021-38165: lynx - Lynx through 2.8.9 mishandles the userinfo subcomponent of a URI, which allows r...
vendor_debian·2021·CVSS 5.3
CVE-2021-38165 [MEDIUM] CVE-2021-38165: lynx - Lynx through 2.8.9 mishandles the userinfo subcomponent of a URI, which allows r...
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.
Scope: local
bookworm: resolved (fixed in 2.9.0dev.6-3)
bullseye: resolved (fixed in 2.9.0dev.6-3~deb11u1)
forky: resolved (fixed in 2.9.0dev.6-3)
sid: resolved (fixed in 2.9.0dev.6-3)
trixie: resolved (fixed in 2.9.0dev.6-3)
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
http://www.openwall.com/lists/oss-security/2021/08/07/11http://www.openwall.com/lists/oss-security/2021/08/07/12http://www.openwall.com/lists/oss-security/2021/08/07/9https://bugs.debian.org/991971https://github.com/w3c/libwww/blob/f010b4cc58d32f34b162f0084fe093f7097a61f0/Library/src/HTParse.c#L118https://lists.debian.org/debian-lts-announce/2021/08/msg00010.htmlhttps://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.htmlhttps://www.debian.org/security/2021/dsa-4953https://www.openwall.com/lists/oss-security/2021/08/07/1https://www.openwall.com/lists/oss-security/2021/08/07/11http://www.openwall.com/lists/oss-security/2021/08/07/11http://www.openwall.com/lists/oss-security/2021/08/07/12http://www.openwall.com/lists/oss-security/2021/08/07/9https://bugs.debian.org/991971https://github.com/w3c/libwww/blob/f010b4cc58d32f34b162f0084fe093f7097a61f0/Library/src/HTParse.c#L118https://lists.debian.org/debian-lts-announce/2021/08/msg00010.htmlhttps://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.htmlhttps://www.debian.org/security/2021/dsa-4953https://www.openwall.com/lists/oss-security/2021/08/07/1https://www.openwall.com/lists/oss-security/2021/08/07/11
2021-08-07
Published