digitalbazaar/forge
### [`v1.3.0`](https://togithub.com/digitalbazaar/forge/blob/HEAD/CHANGELOG.md#130---2022-03-17)
[Compare Source](https://togithub.com/digitalbazaar/forge/compare/v1.2.1...v1.3.0)
##### Security
- Three RSA [PKCS#1](https://togithub.com/PKCS/forge/issues/1) v1.5 signature verification issues were reported by Moosa
Yahyazadeh (moosa-yahyazadeh@uiowa.edu).
- **HIGH**: Leniency in checking `digestAlgorithm` structure can lead to
signature forgery.
- The code is lenient in checking the digest algorithm structure. This can
allow a crafted structure that steals padding bytes and uses unchecked
portion of the [PKCS#1](https://togithub.com/PKCS/forge/issues/1) encoded message to forge a signature when a low
public exponent is being used. For more information, please see
["Bleichenbacher's RSA signature forgery based on implementation
error"](https://mailarchive.ietf.org/arch/msg/openpgp/5rnE9ZRN1AokBVj3VqblGlP63QE/)
by Hal Finney.
- CVE ID: [CVE-2022-24771](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-24771)
- GHSA ID: [GHSA-cfm4-qjh2-4765](https://togithub.com/digitalbazaar/forge/security/advisories/GHSA-cfm4-qjh2-4765)
- **HIGH**: Failing to check tailing garbage bytes can lead to signature
forgery.
- The code does not check for tailing garbage bytes after decoding a
`DigestInfo` ASN.1 structure. This can allow padding bytes to be removed
and garbage data added to forge a signature when a low public exponent is
being used. For more information, please see ["Bleichenbacher's RSA
signature forgery based on implementation
error"](https://mailarchive.ietf.org/arch/msg/openpgp/5rnE9ZRN1AokBVj3VqblGlP63QE/)
by Hal Finney.
- CVE ID: [CVE-2022-24772](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-24772)
- GHSA ID: [GHSA-x4jg-mjrx-434g](https://togithub.com/digitalbazaar/forge/security/advisories/GHSA-x4jg-mjrx-434g)
- **MEDIUM**: Leniency in checking type octet.
- `DigestInfo` is not properly checked for proper ASN.1 structure. This can
lead to successful verification with signatures that contain invalid
structures but a valid digest.
- CVE ID: [CVE-2022-24773](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-24773)
- GHSA ID: [GHSA-2r2c-g63r-vccr](https://togithub.com/digitalbazaar/forge/security/advisories/GHSA-2r2c-g63r-vccr)
##### Fixed
- \[asn1] Add fallback to pretty print invalid UTF8 data.
- \[asn1] `fromDer` is now more strict and will default to ensuring all input
bytes are parsed or throw an error. A new option `parseAllBytes` can disable
this behavior.
- **NOTE**: The previous behavior is being changed since it can lead to
security issues with crafted inputs. It is possible that code doing custom
DER parsing may need to adapt to this new behavior and optional flag.
- \[rsa] Add and use a validator to check for proper structure of parsed ASN.1
`RSASSA-PKCS-v1_5` `DigestInfo` data. Additionally check that the hash
algorithm identifier is a known value from RFC 8017
`PKCS1-v1-5DigestAlgorithms`. An invalid `DigestInfo` or algorithm identifier
will now throw an error.
- **NOTE**: The previous lenient behavior is being changed to be more strict
since it could lead to security issues with crafted inputs. It is possible
that code may have to handle the errors from these stricter checks.
##### Added
- \[oid] Added missing RFC 8017 PKCS1-v1-5DigestAlgorithms algorithm
identifiers:
- `1.2.840.113549.2.2` / `md2`
- `2.16.840.1.101.3.4.2.4` / `sha224`
- `2.16.840.1.101.3.4.2.5` / `sha512-224`
- `2.16.840.1.101.3.4.2.6` / `sha512-256`
Configuration
📅 Schedule: At any time (no schedule defined).
🚦 Automerge: Disabled due to failing status checks.
♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.
🔕 Ignore: Close this PR and you won't be reminded about this update again.
[ ] If you want to rebase/retry this PR, click this checkbox.
This PR contains the following updates:
1.2.1->1.3.0Release Notes
digitalbazaar/forge
### [`v1.3.0`](https://togithub.com/digitalbazaar/forge/blob/HEAD/CHANGELOG.md#130---2022-03-17) [Compare Source](https://togithub.com/digitalbazaar/forge/compare/v1.2.1...v1.3.0) ##### Security - Three RSA [PKCS#1](https://togithub.com/PKCS/forge/issues/1) v1.5 signature verification issues were reported by Moosa Yahyazadeh (moosa-yahyazadeh@uiowa.edu). - **HIGH**: Leniency in checking `digestAlgorithm` structure can lead to signature forgery. - The code is lenient in checking the digest algorithm structure. This can allow a crafted structure that steals padding bytes and uses unchecked portion of the [PKCS#1](https://togithub.com/PKCS/forge/issues/1) encoded message to forge a signature when a low public exponent is being used. For more information, please see ["Bleichenbacher's RSA signature forgery based on implementation error"](https://mailarchive.ietf.org/arch/msg/openpgp/5rnE9ZRN1AokBVj3VqblGlP63QE/) by Hal Finney. - CVE ID: [CVE-2022-24771](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-24771) - GHSA ID: [GHSA-cfm4-qjh2-4765](https://togithub.com/digitalbazaar/forge/security/advisories/GHSA-cfm4-qjh2-4765) - **HIGH**: Failing to check tailing garbage bytes can lead to signature forgery. - The code does not check for tailing garbage bytes after decoding a `DigestInfo` ASN.1 structure. This can allow padding bytes to be removed and garbage data added to forge a signature when a low public exponent is being used. For more information, please see ["Bleichenbacher's RSA signature forgery based on implementation error"](https://mailarchive.ietf.org/arch/msg/openpgp/5rnE9ZRN1AokBVj3VqblGlP63QE/) by Hal Finney. - CVE ID: [CVE-2022-24772](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-24772) - GHSA ID: [GHSA-x4jg-mjrx-434g](https://togithub.com/digitalbazaar/forge/security/advisories/GHSA-x4jg-mjrx-434g) - **MEDIUM**: Leniency in checking type octet. - `DigestInfo` is not properly checked for proper ASN.1 structure. This can lead to successful verification with signatures that contain invalid structures but a valid digest. - CVE ID: [CVE-2022-24773](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-24773) - GHSA ID: [GHSA-2r2c-g63r-vccr](https://togithub.com/digitalbazaar/forge/security/advisories/GHSA-2r2c-g63r-vccr) ##### Fixed - \[asn1] Add fallback to pretty print invalid UTF8 data. - \[asn1] `fromDer` is now more strict and will default to ensuring all input bytes are parsed or throw an error. A new option `parseAllBytes` can disable this behavior. - **NOTE**: The previous behavior is being changed since it can lead to security issues with crafted inputs. It is possible that code doing custom DER parsing may need to adapt to this new behavior and optional flag. - \[rsa] Add and use a validator to check for proper structure of parsed ASN.1 `RSASSA-PKCS-v1_5` `DigestInfo` data. Additionally check that the hash algorithm identifier is a known value from RFC 8017 `PKCS1-v1-5DigestAlgorithms`. An invalid `DigestInfo` or algorithm identifier will now throw an error. - **NOTE**: The previous lenient behavior is being changed to be more strict since it could lead to security issues with crafted inputs. It is possible that code may have to handle the errors from these stricter checks. ##### Added - \[oid] Added missing RFC 8017 PKCS1-v1-5DigestAlgorithms algorithm identifiers: - `1.2.840.113549.2.2` / `md2` - `2.16.840.1.101.3.4.2.4` / `sha224` - `2.16.840.1.101.3.4.2.5` / `sha512-224` - `2.16.840.1.101.3.4.2.6` / `sha512-256`Configuration
📅 Schedule: At any time (no schedule defined).
🚦 Automerge: Disabled due to failing status checks.
♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.
🔕 Ignore: Close this PR and you won't be reminded about this update again.
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