GHSA-9mg4-v392-8j68 CVE-2023-50966
erlang-jose vulnerable to denial of service via large p2c value
Medium
Hex
- Severity
- 5.3 / 10
- Medium · CVSS 3.1
- Exploit chance (EPSS)
- 0.89%
- Chance of exploitation in the next 30 days. Higher than 59.30% of scored vulnerabilities.
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- CWE-400 Uncontrolled Resource Consumption
- Fix
1.11.7- Upgrade jose to this version or later
Description
erlang-jose (aka JOSE for Erlang and Elixir) through 1.11.6 allow attackers to cause a denial of service (CPU consumption) via a large p2c (aka PBES2 Count) value in a JOSE header.
Affected versions
Hex
| Package | Vulnerable | Fixed in |
|---|---|---|
| jose | < 1.11.7 |
1.11.7 |
How to fix
Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.
jose Hex → 1.11.7
- mix
{:jose, "~> 1.11.7"} # then: mix deps.update jose
Severity breakdown
CVSS 3.1 5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- Low
Weakness
CWE-400: Uncontrolled Resource Consumption
The product does not properly control the allocation and maintenance of a limited resource.
How to prevent it
- Architecture and Design: Design throttling mechanisms into the system architecture. The best protection is to limit the amount of resources that an unauthorized user can cause to be expended. A strong authentication and access control model will help prevent such attacks from occurring in the first place. The login application should be protected against DoS attacks as much as possible. Limiting the database access, perhaps by caching result sets, can help minimize the resources expended. To further limit the potential for a DoS attack, consider tracking the rate of requests received from users and blocking requests that exceed a defined rate threshold.
- Architecture and Design: Mitigation of resource exhaustion attacks requires that the target system either: recognizes the attack and denies that user further access for a given amount of time, or uniformly throttles all requests in order to make it more difficult to consume resources more quickly than they can again be freed. The first of these solutions is an issue in itself though, since it may allow attackers to prevent the use of the system by a particular valid user. If the attacker impersonates the valid user, they may be able to prevent the user from accessing the server in question. The second solution is simply difficult to effectively institute -- and even when properly done, it does not provide a full solution. It simply makes the attack require more resources on the part of the attacker.
- Architecture and Design: Ensure that protocols have specific limits of scale placed on them.
- Implementation: Ensure that all failures in resource allocation place the system into a safe posture.
References
Advisories
Packages
Other links
Timeline
- Published
- Last updated by the source
- Latest EPSS score
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| EEF-CVE-2026-65630 Timing side-channel in pure-Erlang X25519 scalar multiplication leaks the private key in jose | Not rated yet | Also affects jose |
| EEF-CVE-2026-65632 ECDSA signature length is not validated in jose, allowing signature malleability | Not rated yet | Also affects jose |
| EEF-CVE-2026-65631 erlang-jose RSA JWK parsing attempts to factor an attacker-controlled modulus, enabling CPU-exhaustion denial of service | Not rated yet | Also affects jose |
| EEF-CVE-2026-65629 Weak PBKDF2 parameters for password-encrypted private-key export in jose | Not rated yet | Also affects jose |
| EEF-CVE-2026-65628 Infinite recursion (CPU denial-of-service) in JOSE.JWK.shared_secret/2 on mismatched key types | Not rated yet | Also affects jose |
| EEF-CVE-2026-65627 Decompression bomb via unbounded zlib:inflate in jose_jwe_zip:uncompress/2 | Not rated yet | Also affects jose |
| EEF-CVE-2026-65626 Bleichenbacher padding oracle in RSAES-PKCS1-v1_5 decryption in jose | Not rated yet | Also affects jose |
| EEF-CVE-2026-65625 Attacker-controlled AES-GCM authentication tag length allows tag forgery in jose | Not rated yet | Also affects jose |
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