azure-storage-blob
Microsoft Azure Blob Storage Client Library for Python
Activity
- Latest release
- 2w ago
- Total releases
- 91
- Cadence
- ~27 days
- Last 12 months
- 10
Details
- License
- MIT
- First release
- Oct 05, 2017
| Version | Released | |
|---|---|---|
12.30.1
patch
| ||
12.31.0b1
pre
| ||
12.30.0
minor
| ||
12.29.0
minor
| ||
12.30.0b1
pre
| ||
12.29.0b1
pre
| ||
12.28.0
minor
| ||
12.28.0b1
pre
| ||
12.27.1
patch
| ||
12.27.0
minor
| ||
12.26.0
minor
| ||
12.27.0b1
pre
| ||
12.26.0b1
pre
| ||
12.25.1
patch
| ||
12.25.0
minor
| ||
12.25.0b1
pre
| ||
12.24.1
patch
| ||
12.24.0
minor
| ||
12.24.0b1
pre
| ||
12.23.1
patch
| ||
12.23.0
minor
| ||
12.23.0b1
pre
| ||
12.22.0
minor
| ||
12.21.0
minor
| ||
12.21.0b1
pre
| ||
12.20.0
minor
| ||
12.20.0b1
pre
| ||
12.19.1
patch
| ||
12.19.0
minor
| ||
12.19.0b1
pre
| ||
12.18.3
patch
| ||
12.18.2
patch
| ||
12.18.1
patch
| ||
12.18.0
minor
| ||
12.18.0b1
pre
| ||
12.17.0
minor
| ||
12.17.0b1
pre
| ||
12.16.0
minor
| ||
12.16.0b1
pre
| ||
12.15.0
minor
| ||
12.15.0b1
pre
| ||
12.14.1
patch
| ||
12.14.0
minor
| ||
12.14.0b2
pre
| ||
12.14.0b1
pre
| ||
12.13.1
patch
| ||
12.13.0
minor
| ||
12.13.0b1
pre
1 CVE
CVE-2022-30187
PYSEC-2026-784
GHSA-64x4-9hc6-r2h6
PYSEC-2026-2388
Jul 06, 2026
Microsoft: CBC Padding Oracle in Azure Blob Storage Encryption Library
4.7
/ 10
Medium
Local
High
Low
None
Unchanged
High
None
None
SummaryThe Azure Storage Encryption library in Java and other languages is vulnerable to a CBC Padding Oracle attack, similar to CVE-2020-8911. The library is not vulnerable to the equivalent of CVE-2020-8912, but only because it currently only supports AES-CBC as encryption mode. SeverityModerate - The vulnerability poses insider risks/privilege escalation risks, circumventing controls for stored data. Further AnalysisThe Java Azure Blob Storage Encryption SDK is impacted by an issue that can result in loss of confidentiality and message forgery. The attack requires write access to the container in question, and that the attacker has access to an endpoint that reveals decryption failures (without revealing the plaintext) and that when encrypting the CBC option was chosen as content cipher. This advisory describes the plaintext revealing vulnerabilities in the Java Azure Blob Storage Encryption SDK, with a similar issue in the other blob storage SDKs being present as well. In the current version of the Azure Blob Storage crypto SDK, the only algorithm option that allows users to encrypt files is to AES-CBC, without computing a MAC on the data. This exposes a padding oracle vulnerability: If the attacker has write access to the blob container bucket and can observe whether or not an endpoint with access to the key can decrypt a file (without observing the file contents that the endpoint learns in the process), they can reconstruct the plaintext with (on average) 128*length(plaintext) queries to the endpoint, by exploiting CBC's ability to manipulate the bytes of the next block and PKCS5 padding errors. TimelineDate reported: March 29 2022 Date preview: June 16 2022 Date GA: July 11 2022 Date disclosed: July 17 2022 Affected versions
0.37.0
0.37.1
1.0.0
1.1.0
1.2.0rc1
1.3.0
1.3.1
1.4.0
1.5.0
12.0.0
12.0.0b1
12.0.0b2
+ 32 more Show less
12.0.0b3
12.0.0b4
12.1.0
12.10.0
12.10.0b1
12.10.0b2
12.10.0b3
12.10.0b4
12.11.0
12.12.0
12.12.0b1
12.13.0b1
12.2.0
12.3.0
12.3.1
12.3.2
12.4.0
12.4.0b1
12.5.0
12.6.0
12.6.0b1
12.7.0
12.7.0b1
12.7.1
12.8.0
12.8.0b1
12.8.1
12.9.0
12.9.0b1
2.0.0
2.0.1
2.1.0
Fixed in
12.13.0
References
Updated Jul 13, 2026 · Source: OSV.dev | ||
12.12.0
minor
1 CVE
CVE-2022-30187
PYSEC-2026-784
GHSA-64x4-9hc6-r2h6
PYSEC-2026-2388
Jul 06, 2026
Microsoft: CBC Padding Oracle in Azure Blob Storage Encryption Library
4.7
/ 10
Medium
Local
High
Low
None
Unchanged
High
None
None
SummaryThe Azure Storage Encryption library in Java and other languages is vulnerable to a CBC Padding Oracle attack, similar to CVE-2020-8911. The library is not vulnerable to the equivalent of CVE-2020-8912, but only because it currently only supports AES-CBC as encryption mode. SeverityModerate - The vulnerability poses insider risks/privilege escalation risks, circumventing controls for stored data. Further AnalysisThe Java Azure Blob Storage Encryption SDK is impacted by an issue that can result in loss of confidentiality and message forgery. The attack requires write access to the container in question, and that the attacker has access to an endpoint that reveals decryption failures (without revealing the plaintext) and that when encrypting the CBC option was chosen as content cipher. This advisory describes the plaintext revealing vulnerabilities in the Java Azure Blob Storage Encryption SDK, with a similar issue in the other blob storage SDKs being present as well. In the current version of the Azure Blob Storage crypto SDK, the only algorithm option that allows users to encrypt files is to AES-CBC, without computing a MAC on the data. This exposes a padding oracle vulnerability: If the attacker has write access to the blob container bucket and can observe whether or not an endpoint with access to the key can decrypt a file (without observing the file contents that the endpoint learns in the process), they can reconstruct the plaintext with (on average) 128*length(plaintext) queries to the endpoint, by exploiting CBC's ability to manipulate the bytes of the next block and PKCS5 padding errors. TimelineDate reported: March 29 2022 Date preview: June 16 2022 Date GA: July 11 2022 Date disclosed: July 17 2022 Affected versions
0.37.0
0.37.1
1.0.0
1.1.0
1.2.0rc1
1.3.0
1.3.1
1.4.0
1.5.0
12.0.0
12.0.0b1
12.0.0b2
+ 32 more Show less
12.0.0b3
12.0.0b4
12.1.0
12.10.0
12.10.0b1
12.10.0b2
12.10.0b3
12.10.0b4
12.11.0
12.12.0
12.12.0b1
12.13.0b1
12.2.0
12.3.0
12.3.1
12.3.2
12.4.0
12.4.0b1
12.5.0
12.6.0
12.6.0b1
12.7.0
12.7.0b1
12.7.1
12.8.0
12.8.0b1
12.8.1
12.9.0
12.9.0b1
2.0.0
2.0.1
2.1.0
Fixed in
12.13.0
References
Updated Jul 13, 2026 · Source: OSV.dev | ||
12.12.0b1
pre
1 CVE
CVE-2022-30187
PYSEC-2026-784
GHSA-64x4-9hc6-r2h6
PYSEC-2026-2388
Jul 06, 2026
Microsoft: CBC Padding Oracle in Azure Blob Storage Encryption Library
4.7
/ 10
Medium
Local
High
Low
None
Unchanged
High
None
None
SummaryThe Azure Storage Encryption library in Java and other languages is vulnerable to a CBC Padding Oracle attack, similar to CVE-2020-8911. The library is not vulnerable to the equivalent of CVE-2020-8912, but only because it currently only supports AES-CBC as encryption mode. SeverityModerate - The vulnerability poses insider risks/privilege escalation risks, circumventing controls for stored data. Further AnalysisThe Java Azure Blob Storage Encryption SDK is impacted by an issue that can result in loss of confidentiality and message forgery. The attack requires write access to the container in question, and that the attacker has access to an endpoint that reveals decryption failures (without revealing the plaintext) and that when encrypting the CBC option was chosen as content cipher. This advisory describes the plaintext revealing vulnerabilities in the Java Azure Blob Storage Encryption SDK, with a similar issue in the other blob storage SDKs being present as well. In the current version of the Azure Blob Storage crypto SDK, the only algorithm option that allows users to encrypt files is to AES-CBC, without computing a MAC on the data. This exposes a padding oracle vulnerability: If the attacker has write access to the blob container bucket and can observe whether or not an endpoint with access to the key can decrypt a file (without observing the file contents that the endpoint learns in the process), they can reconstruct the plaintext with (on average) 128*length(plaintext) queries to the endpoint, by exploiting CBC's ability to manipulate the bytes of the next block and PKCS5 padding errors. TimelineDate reported: March 29 2022 Date preview: June 16 2022 Date GA: July 11 2022 Date disclosed: July 17 2022 Affected versions
0.37.0
0.37.1
1.0.0
1.1.0
1.2.0rc1
1.3.0
1.3.1
1.4.0
1.5.0
12.0.0
12.0.0b1
12.0.0b2
+ 32 more Show less
12.0.0b3
12.0.0b4
12.1.0
12.10.0
12.10.0b1
12.10.0b2
12.10.0b3
12.10.0b4
12.11.0
12.12.0
12.12.0b1
12.13.0b1
12.2.0
12.3.0
12.3.1
12.3.2
12.4.0
12.4.0b1
12.5.0
12.6.0
12.6.0b1
12.7.0
12.7.0b1
12.7.1
12.8.0
12.8.0b1
12.8.1
12.9.0
12.9.0b1
2.0.0
2.0.1
2.1.0
Fixed in
12.13.0
References
Updated Jul 13, 2026 · Source: OSV.dev |