Yaws: Security Vulnerabilities
WebDAV implementation in Yaws web server versions 1.81 to 2.0.7 is vulnerable to XXE injection.
CVSS Score
9.8
EPSS Score
0.009
Published
2020-09-09
CGI implementation in Yaws web server versions 1.81 to 2.0.7 is vulnerable to OS command injection.
CVSS Score
9.8
EPSS Score
0.39
Published
2020-09-09
yaws_config.erl in Yaws through 2.0.2 and/or 2.0.7 loads obsolete TLS ciphers, as demonstrated by ones that allow Sweet32 attacks, if running on an Erlang/OTP virtual machine with a version less than 21.0.
CVSS Score
5.5
EPSS Score
0.001
Published
2020-05-15
yaws before 2.0.4 does not attempt to address RFC 3875 section 4.1.18 namespace conflicts and therefore does not protect CGI applications from the presence of untrusted client data in the HTTP_PROXY environment variable, which might allow remote attackers to redirect a CGI application's outbound HTTP traffic to an arbitrary proxy server via a crafted Proxy header in an HTTP request, aka an "httpoxy" issue.
CVSS Score
6.1
EPSS Score
0.007
Published
2019-12-10
Yaws 1.91 has a directory traversal vulnerability in the way certain URLs are processed. A remote authenticated user could use this flaw to obtain content of arbitrary local files via specially-crafted URL request.
CVSS Score
6.5
EPSS Score
0.259
Published
2019-11-26
Yaws 1.91 allows Unauthenticated Remote File Disclosure via HTTP Directory Traversal with /%5C../ to port 8080. NOTE: this CVE is only about use of an initial /%5C sequence to defeat traversal protection mechanisms; the initial /%5C sequence was apparently not discussed in earlier research on this product.
CVSS Score
7.5
EPSS Score
0.905
Published
2017-07-07
Multiple cross-site scripting (XSS) vulnerabilities in the wiki application in Yaws 1.88 allow remote attackers to inject arbitrary web script or HTML via (1) the tag parameter to editTag.yaws, (2) the index parameter to showOldPage.yaws, (3) the node parameter to allRefsToMe.yaws, or (4) the text parameter to editPage.yaws.
CVSS Score
4.3
EPSS Score
0.007
Published
2011-12-29
Directory traversal vulnerability in Yaws 1.89 allows remote attackers to read arbitrary files via ..\ (dot dot backslash) and other sequences.
CVSS Score
5.0
EPSS Score
0.089
Published
2010-11-04
Yaws 1.85 writes data to a log file without sanitizing non-printable characters, which might allow remote attackers to modify a window's title, or possibly execute arbitrary commands or overwrite files, via an HTTP request containing an escape sequence for a terminal emulator.
CVSS Score
5.0
EPSS Score
0.039
Published
2010-01-13
Yaws before 1.80 allows remote attackers to cause a denial of service (memory consumption and crash) via a request with a large number of headers.
CVSS Score
5.0
EPSS Score
0.256
Published
2009-03-02
Page 1