fix(deps): update dependency express to v4.20.0 [security] #944
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This PR contains the following updates:
4.17.1
->4.20.0
GitHub Vulnerability Alerts
CVE-2024-29041
Impact
Versions of Express.js prior to 4.19.2 and pre-release alpha and beta versions before 5.0.0-beta.3 are affected by an open redirect vulnerability using malformed URLs.
When a user of Express performs a redirect using a user-provided URL Express performs an encode using
encodeurl
on the contents before passing it to thelocation
header. This can cause malformed URLs to be evaluated in unexpected ways by common redirect allow list implementations in Express applications, leading to an Open Redirect via bypass of a properly implemented allow list.The main method impacted is
res.location()
but this is also called from withinres.redirect()
.Patches
expressjs/express@0867302
expressjs/express@0b74695
An initial fix went out with
express@4.19.0
, we then patched a feature regression in4.19.1
and added improved handling for the bypass in4.19.2
.Workarounds
The fix for this involves pre-parsing the url string with either
require('node:url').parse
ornew URL
. These are steps you can take on your own before passing the user input string tores.location
orres.redirect
.References
https://github.com/expressjs/express/pull/5539
https://github.com/koajs/koa/issues/1800
https://expressjs.com/en/4x/api.html#res.location
CVE-2024-43796
Impact
In express <4.20.0, passing untrusted user input - even after sanitizing it - to
response.redirect()
may execute untrusted codePatches
this issue is patched in express 4.20.0
Workarounds
users are encouraged to upgrade to the patched version of express, but otherwise can workaround this issue by making sure any untrusted inputs are safe, ideally by validating them against an explicit allowlist
Details
successful exploitation of this vector requires the following:
Release Notes
expressjs/express (express)
v4.20.0
Compare Source
==========
depth
option to customize the depth level in the parserdepth
level for parsing URL-encoded data is now32
(previously wasInfinity
)res.redirect
\
,|
, and^
to align better with URL specoptions.maxAge
andoptions.expires
tores.clearCookie
v4.19.2
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==========
v4.19.1
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==========
v4.19.0
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v4.18.3
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==========
v4.18.2
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===================
v4.18.1
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===================
v4.18.0
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===================
res.download
options
withoutfilename
inres.download
res.status
null
/undefined
asmaxAge
inres.cookie
Object.prototype
values in settings throughapp.set
/app.get
default
with same arguments as types inres.format
res.send
http-errors
forres.format
errorstrict
priority
optionexpires
option to reject invalid dateseval
usage withFunction
constructorprocess
to check for listeners425 Unordered Collection
to standard425 Too Early
v4.17.3
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===================
__proto__
keysv4.17.2
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===================
undefined
inres.jsonp
undefined
when"json escape"
is enabledRegExp
sres.jsonp(obj, status)
deprecation messageres.is
JSDocmaxAge
option to reject invalid valuesreq.socket
over deprecatedreq.connection
Configuration
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