This statement is misleading in that it says "key generation is
expensive". ECDHE key generation (over the elliptic curves that are
commonly used for TLS) is insanely fast compared to most other types
of key generation.
This statement is irrelevant for TLS 1.3, which requires (EC)DHE.
Even if this statement is somewhat true for TLS 1.2, it does not
justify discouraging the use of (EC)DHE.
PR-URL: https://github.com/nodejs/node/pull/41528
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
The internal use of tls.parseCertString was removed in
a336444c7f. The function does not handle
multi-value RDNs correctly, leading to incorrect representations and
security concerns.
This change is breaking in two ways: tls.parseCertString is removed
(but has been runtime-deprecated since Node.js 9) and
_tls_common.translatePeerCertificate does not translate the `subject`
and `issuer` properties anymore.
This change also removes the recommendation to use querystring.parse
instead, which is similarly dangerous.
PR-URL: https://github.com/nodejs/node/pull/41479
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
This is a security release.
Notable changes:
Improper handling of URI Subject Alternative Names (Medium)(CVE-2021-44531)
- Accepting arbitrary Subject Alternative Name (SAN) types, unless a PKI
is specifically defined to use a particular SAN type, can result in
bypassing name-constrained intermediates. Node.js was accepting URI SAN
types, which PKIs are often not defined to use. Additionally, when a
protocol allows URI SANs, Node.js did not match the URI correctly.
- Versions of Node.js with the fix for this disable the URI SAN type when
checking a certificate against a hostname. This behavior can be
reverted through the `--security-revert` command-line option.
- More details will be available at
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44531
Certificate Verification Bypass via String Injection (Medium)(CVE-2021-44532)
- Node.js converts SANs (Subject Alternative Names) to a string format.
It uses this string to check peer certificates against hostnames when
validating connections. The string format was subject to an injection
vulnerability when name constraints were used within a certificate
chain, allowing the bypass of these name constraints.
- Versions of Node.js with the fix for this escape SANs containing the
problematic characters in order to prevent the injection. This
behavior can be reverted through the `--security-revert` command-line
option.
- More details will be available at
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44532
Incorrect handling of certificate subject and issuer fields (Medium)(CVE-2021-44533)
- Node.js did not handle multi-value Relative Distinguished Names
correctly. Attackers could craft certificate subjects containing a
single-value Relative Distinguished Name that would be interpreted as a
multi-value Relative Distinguished Name, for example, in order to inject
a Common Name that would allow bypassing the certificate subject
verification.
- Affected versions of Node.js do not accept multi-value Relative
Distinguished Names and are thus not vulnerable to such attacks
themselves. However, third-party code that uses node's ambiguous
presentation of certificate subjects may be vulnerable.
- More details will be available at
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44533
Prototype pollution via `console.table` properties (Low)(CVE-2022-21824)
- Due to the formatting logic of the `console.table()` function it was
not safe to allow user controlled input to be passed to the `properties`
parameter while simultaneously passing a plain object with at least one
property as the first parameter, which could be `__proto__`. The
prototype pollution has very limited control, in that it only allows an
empty string to be assigned numerical keys of the object prototype.
- Versions of Node.js with the fix for this use a null protoype for the
object these properties are being assigned to.
- More details will be available at
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-21824
PR-URL: https://github.com/nodejs-private/node-private/pull/311
This is a security release.
Notable changes:
Improper handling of URI Subject Alternative Names (Medium)(CVE-2021-44531)
- Accepting arbitrary Subject Alternative Name (SAN) types, unless a PKI
is specifically defined to use a particular SAN type, can result in
bypassing name-constrained intermediates. Node.js was accepting URI SAN
types, which PKIs are often not defined to use. Additionally, when a
protocol allows URI SANs, Node.js did not match the URI correctly.
- Versions of Node.js with the fix for this disable the URI SAN type when
checking a certificate against a hostname. This behavior can be
reverted through the `--security-revert` command-line option.
- More details will be available at
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44531
Certificate Verification Bypass via String Injection (Medium)(CVE-2021-44532)
- Node.js converts SANs (Subject Alternative Names) to a string format.
It uses this string to check peer certificates against hostnames when
validating connections. The string format was subject to an injection
vulnerability when name constraints were used within a certificate
chain, allowing the bypass of these name constraints.
- Versions of Node.js with the fix for this escape SANs containing the
problematic characters in order to prevent the injection. This
behavior can be reverted through the `--security-revert` command-line
option.
- More details will be available at
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44532
Incorrect handling of certificate subject and issuer fields (Medium)(CVE-2021-44533)
- Node.js did not handle multi-value Relative Distinguished Names
correctly. Attackers could craft certificate subjects containing a
single-value Relative Distinguished Name that would be interpreted as a
multi-value Relative Distinguished Name, for example, in order to inject
a Common Name that would allow bypassing the certificate subject
verification.
- Affected versions of Node.js do not accept multi-value Relative
Distinguished Names and are thus not vulnerable to such attacks
themselves. However, third-party code that uses node's ambiguous
presentation of certificate subjects may be vulnerable.
- More details will be available at
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44533
Prototype pollution via `console.table` properties (Low)(CVE-2022-21824)
- Due to the formatting logic of the `console.table()` function it was
not safe to allow user controlled input to be passed to the `properties`
parameter while simultaneously passing a plain object with at least one
property as the first parameter, which could be `__proto__`. The
prototype pollution has very limited control, in that it only allows an
empty string to be assigned numerical keys of the object prototype.
- Versions of Node.js with the fix for this use a null protoype for the
object these properties are being assigned to.
- More details will be available at
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-21824
PR-URL: https://github.com/nodejs-private/node-private/pull/312
This is a security release.
Notable changes:
Improper handling of URI Subject Alternative Names (Medium)(CVE-2021-44531)
- Accepting arbitrary Subject Alternative Name (SAN) types, unless a PKI
is specifically defined to use a particular SAN type, can result in
bypassing name-constrained intermediates. Node.js was accepting URI SAN
types, which PKIs are often not defined to use. Additionally, when a
protocol allows URI SANs, Node.js did not match the URI correctly.
- Versions of Node.js with the fix for this disable the URI SAN type when
checking a certificate against a hostname. This behavior can be
reverted through the `--security-revert` command-line option.
- More details will be available at
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44531
Certificate Verification Bypass via String Injection (Medium)(CVE-2021-44532)
- Node.js converts SANs (Subject Alternative Names) to a string format.
It uses this string to check peer certificates against hostnames when
validating connections. The string format was subject to an injection
vulnerability when name constraints were used within a certificate
chain, allowing the bypass of these name constraints.
- Versions of Node.js with the fix for this escape SANs containing the
problematic characters in order to prevent the injection. This
behavior can be reverted through the `--security-revert` command-line
option.
- More details will be available at
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44532
Incorrect handling of certificate subject and issuer fields (Medium)(CVE-2021-44533)
- Node.js did not handle multi-value Relative Distinguished Names
correctly. Attackers could craft certificate subjects containing a
single-value Relative Distinguished Name that would be interpreted as a
multi-value Relative Distinguished Name, for example, in order to inject
a Common Name that would allow bypassing the certificate subject
verification.
- Affected versions of Node.js do not accept multi-value Relative
Distinguished Names and are thus not vulnerable to such attacks
themselves. However, third-party code that uses node's ambiguous
presentation of certificate subjects may be vulnerable.
- More details will be available at
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44533
Prototype pollution via `console.table` properties (Low)(CVE-2022-21824)
- Due to the formatting logic of the `console.table()` function it was
not safe to allow user controlled input to be passed to the `properties`
parameter while simultaneously passing a plain object with at least one
property as the first parameter, which could be `__proto__`. The
prototype pollution has very limited control, in that it only allows an
empty string to be assigned numerical keys of the object prototype.
- Versions of Node.js with the fix for this use a null protoype for the
object these properties are being assigned to.
- More details will be available at
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-21824
PR-URL: https://github.com/nodejs-private/node-private/pull/310
This is a security release.
Notable changes:
Improper handling of URI Subject Alternative Names (Medium)(CVE-2021-44531)
- Accepting arbitrary Subject Alternative Name (SAN) types, unless a PKI
is specifically defined to use a particular SAN type, can result in
bypassing name-constrained intermediates. Node.js was accepting URI SAN
types, which PKIs are often not defined to use. Additionally, when a
protocol allows URI SANs, Node.js did not match the URI correctly.
- Versions of Node.js with the fix for this disable the URI SAN type when
checking a certificate against a hostname. This behavior can be
reverted through the `--security-revert` command-line option.
- More details will be available at
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44531
Certificate Verification Bypass via String Injection (Medium)(CVE-2021-44532)
- Node.js converts SANs (Subject Alternative Names) to a string format.
It uses this string to check peer certificates against hostnames when
validating connections. The string format was subject to an injection
vulnerability when name constraints were used within a certificate
chain, allowing the bypass of these name constraints.
- Versions of Node.js with the fix for this escape SANs containing the
problematic characters in order to prevent the injection. This
behavior can be reverted through the `--security-revert` command-line
option.
- More details will be available at
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44532
Incorrect handling of certificate subject and issuer fields (Medium)(CVE-2021-44533)
- Node.js did not handle multi-value Relative Distinguished Names
correctly. Attackers could craft certificate subjects containing a
single-value Relative Distinguished Name that would be interpreted as a
multi-value Relative Distinguished Name, for example, in order to inject
a Common Name that would allow bypassing the certificate subject
verification.
- Affected versions of Node.js do not accept multi-value Relative
Distinguished Names and are thus not vulnerable to such attacks
themselves. However, third-party code that uses node's ambiguous
presentation of certificate subjects may be vulnerable.
- More details will be available at
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44533
Prototype pollution via `console.table` properties (Low)(CVE-2022-21824)
- Due to the formatting logic of the `console.table()` function it was
not safe to allow user controlled input to be passed to the `properties`
parameter while simultaneously passing a plain object with at least one
property as the first parameter, which could be `__proto__`. The
prototype pollution has very limited control, in that it only allows an
empty string to be assigned numerical keys of the object prototype.
- Versions of Node.js with the fix for this use a null protoype for the
object these properties are being assigned to.
- More details will be available at
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-21824
PR-URL: https://github.com/nodejs-private/node-private/pull/309
Previously, Node.js incorrectly accepted uniformResourceIdentifier (URI)
subject alternative names in checkServerIdentity regardless of the
application protocol. This was incorrect even in the most common cases.
For example, RFC 2818 specifies (and RFC 6125 confirms) that HTTP over
TLS only uses dNSName and iPAddress subject alternative names, but not
uniformResourceIdentifier subject alternative names.
Additionally, name constrained certificate authorities might not be
constrained to specific URIs, allowing them to issue certificates for
URIs that specify hosts that they would not be allowed to issue dNSName
certificates for.
Even for application protocols that make use of URI subject alternative
names (such as SIP, see RFC 5922), Node.js did not implement the
required checks correctly, for example, because checkServerIdentity
ignores the URI scheme.
As a side effect, this also fixes an edge case. When a hostname is not
an IP address and no dNSName subject alternative name exists, the
subject's Common Name should be considered even when an iPAddress
subject alternative name exists.
It remains possible for users to pass a custom checkServerIdentity
function to the TLS implementation in order to implement custom identity
verification logic.
This addresses CVE-2021-44531.
CVE-ID: CVE-2021-44531
PR-URL: https://github.com/nodejs-private/node-private/pull/300
Reviewed-By: Michael Dawson <midawson@redhat.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
This change introduces JSON-compatible escaping rules for strings that
include X.509 GeneralName components (see RFC 5280). This non-standard
format avoids ambiguities and prevents injection attacks that could
previously lead to X.509 certificates being accepted even though they
were not valid for the target hostname.
These changes affect the format of subject alternative names and the
format of authority information access. The checkServerIdentity function
has been modified to safely handle the new format, eliminating the
possibility of injecting subject alternative names into the verification
logic.
Because each subject alternative name is only encoded as a JSON string
literal if necessary for security purposes, this change will only be
visible in rare cases.
This addresses CVE-2021-44532.
CVE-ID: CVE-2021-44532
PR-URL: https://github.com/nodejs-private/node-private/pull/300
Reviewed-By: Michael Dawson <midawson@redhat.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Yu