CVE-2025-49824
BaseFortify
Publication date: 2025-06-17
Last updated on: 2025-06-18
Assigner: GitHub, Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-200 | The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
CVE-2025-49824 is a vulnerability in the conda-smithy package's function travis_encrypt_binstar_token, which encrypts tokens using RSA encryption with an outdated and insecure padding scheme called PKCS#1 v1.5. This makes it susceptible to an Oracle Padding Attack, where an attacker with access to an oracle system can submit modified ciphertexts and analyze responses to deduce the plaintext without needing the private key. The vulnerability was patched by replacing the insecure padding with RSA-OAEP, a more secure padding scheme. [1]
How can this vulnerability impact me? :
This vulnerability could allow a malicious actor to decrypt encrypted tokens used by conda-smithy without possessing the private key, potentially exposing sensitive authentication tokens. This could lead to unauthorized access to CI services or repositories that rely on these tokens, compromising the security of automated build and deployment processes. [1]
How can this vulnerability be detected on my network or system? Can you suggest some commands?
This vulnerability can be detected by checking the version of the conda-smithy package in use and inspecting the encryption method used for Travis CI tokens. Specifically, versions up to 3.47.0 use the vulnerable PKCS#1 v1.5 padding scheme. You can check the installed version of conda-smithy with the command `conda-smithy --version` or by inspecting your package manager. Additionally, you can verify if token files in the ~/.conda-smithy/ directory have insecure permissions by running `ls -l ~/.conda-smithy/` and ensuring token files have permissions set to 600. If you have access to the source code or logs, look for usage of `Crypto.Cipher.PKCS1_v1_5` for encryption, which indicates vulnerability. There are no specific network detection commands provided. [1, 2]
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability immediately, upgrade conda-smithy to version 3.47.1 or later, where the padding scheme for RSA encryption of Travis CI tokens has been changed from PKCS#1 v1.5 to the more secure RSA-OAEP. Additionally, ensure that all token files stored in ~/.conda-smithy/ have strict file permissions set to 600 (owner read/write only) to prevent token leakage. You can enforce this by running `chmod 600 ~/.conda-smithy/*` on token files. Avoid using or accepting token files with more permissive permissions, as the updated conda-smithy refuses to read such files. [1, 2]