CVE-2021-22569

An issue in protobuf-java allowed the interleaving of com.google.protobuf.UnknownFieldSet fields in such a way that would be processed out of order. A small malicious payload can occupy the parser for several minutes by creating large numbers of short-lived objects that cause frequent, repeated pauses. We recommend upgrading libraries beyond the vulnerable versions.

Summary

A potential Denial of Service issue in protobuf-java was discovered in the parsing procedure for binary data.

Reporter: OSS-Fuzz

Affected versions: All versions of Java Protobufs (including Kotlin and JRuby) prior to the versions listed below. Protobuf "javalite" users (typically Android) are not affected.

Severity

CVE-2021-22569 High - CVSS Score: 7.5, An implementation weakness in how unknown fields are parsed in Java. A small (~800 KB) malicious payload can occupy the parser for several minutes by creating large numbers of short-lived objects that cause frequent, repeated GC pauses.

Proof of Concept

For reproduction details, please refer to the oss-fuzz issue that identifies the specific inputs that exercise this parsing weakness.

Remediation and Mitigation

Please update to the latest available versions of the following packages:

• protobuf-java (3.16.1, 3.18.2, 3.19.2)
• protobuf-kotlin (3.18.2, 3.19.2)
• google-protobuf [JRuby gem only] (3.19.2)

Protocol Buffers (a.k.a., protobuf) are Google's language-neutral, platform-neutral, extensible mechanism for serializing structured data. You can find protobuf's documentation on the Google Developers site.

Security Fix(es):

An issue in protobuf-java allowed the interleaving of com.google.protobuf.UnknownFieldSet fields in such a way that would be processed out of order. A small malicious payload can occupy the parser for several minutes by creating large numbers of short-lived objects that cause frequent, repeated pauses. We recommend upgrading libraries beyond the vulnerable versions.(CVE-2021-22569)

Root has patched CVE-2021-22569 in the com.google.protobuf:protobuf-java package for Root:Maven. Multiple fixed versions available.

An issue in protobuf-java allowed the interleaving of com.google.protobuf.UnknownFieldSet fields in such a way that would be processed out of order. A small malicious payload can occupy the parser for several minutes by creating large numbers of short-lived objects that cause frequent, repeated pauses. We recommend upgrading libraries beyond the vulnerable versions.

TuxCare rebuilt com.google.protobuf:protobuf-java to address 2 CVEs. Fixed in 2.5.0-tuxcare.1.

TuxCare rebuilt com.google.protobuf:protobuf-java to address 2 CVEs. Fixed in 2.6.1-tuxcare.1.

TuxCare rebuilt com.google.protobuf:protobuf-java to address 2 CVEs. Fixed in 3.7.1-tuxcare.1.

TuxCare rebuilt com.google.protobuf:protobuf-java to address 2 CVEs. Fixed in 3.6.1-tuxcare.1.

TuxCare rebuilt 2 com.google.protobuf packages to address 3 CVEs. Fixed in 3.12.0-tuxcare.1.

TuxCare rebuilt 2 com.google.protobuf packages to address 3 CVEs. Fixed in 3.12.2-tuxcare.1.

This update for protobuf fixes the following issues:

• CVE-2021-22569: Fixed Denial of Service in protobuf-java in the parsing procedure for binary data (bsc#1194530).
• CVE-2022-1941: Fix a potential DoS issue in protobuf-cpp and protobuf-python (bsc#1203681)
• CVE-2022-3171: Fix a potential DoS issue when parsing with binary data in protobuf-java (bsc#1204256)

This update for grpc, protobuf, python-Deprecated, python-PyGithub, python-aiocontextvars, python-avro, python-bcrypt, python-cryptography, python-cryptography-vectors, python-google-api-core, python-googleapis-common-protos, python-grpcio-gcp, python-humanfriendly, python-jsondiff, python-knack, python-opencensus, python-opencensus-context, python-opencensus-ext-threading, python-opentelemetry-api, python-psutil, python-pytest-asyncio, python-requests, python-websocket-client, python-websockets fixes the following issues:

grpc:

• Update in SLE-15 (bsc#1197726, bsc#1144068)

protobuf:

• Fix a potential DoS issue in protobuf-cpp and protobuf-python, CVE-2022-1941, bsc#1203681
• Fix a potential DoS issue when parsing with binary data in protobuf-java, CVE-2022-3171, bsc#1204256
• Fix potential Denial of Service in protobuf-java in the parsing procedure for binary data, CVE-2021-22569, bsc#1194530
• Add missing dependency of python subpackages on python-six (bsc#1177127)
• Updated to version 3.9.2 (bsc#1162343)
  • Remove OSReadLittle* due to alignment requirements.
  • Don't use unions and instead use memcpy for the type swaps.
• Disable LTO (bsc#1133277)

python-aiocontextvars:

• Include in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)

python-avro:

• Include in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)
• Update in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)

python-cryptography:

• update to 3.3.2 (bsc#1182066, CVE-2020-36242, bsc#1198331)
  • SECURITY ISSUE: Fixed a bug where certain sequences of update() calls when symmetrically encrypting very large payloads (>2GB) could result in an integer overflow, leading to buffer overflows. CVE-2020-36242

python-cryptography-vectors:

• update to 3.2 (bsc#1178168, CVE-2020-25659):
  • CVE-2020-25659: Attempted to make RSA PKCS#1v1.5 decryption more constant time, to protect against Bleichenbacher vulnerabilities. Due to limitations imposed by our API, we cannot completely mitigate this vulnerability.
  • Support for OpenSSL 1.0.2 has been removed.
  • Added basic support for PKCS7 signing (including SMIME) via PKCS7SignatureBuilder.
• update to 3.3.2 (bsc#1198331)

python-Deprecated:

• Include in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)
• update to 1.2.13:

python-google-api-core:

• Update to 1.14.2

python-googleapis-common-protos:

• Update to 1.6.0

python-grpcio-gcp:

• Initial spec for v0.2.2

python-humanfriendly:

• Update in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)
• Update to 10.0

python-jsondiff:

• Update in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)
• Update to version 1.3.0

python-knack:

• Update in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)
• Update to version 0.9.0

python-opencensus:

• Include in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)
• Disable Python2 build
• Update to 0.8.0

python-opencensus-context:

• Include in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)

python-opencensus-ext-threading:

• Include in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)
• Initial build version 0.1.2

python-opentelemetry-api:

• Include in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)
• Version update to 1.5.0

python-psutil:

• Update in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)
• update to 5.9.1
• remove the dependency on net-tools, since it conflicts with busybox-hostnmame which is default on MicroOS. (bsc#1184753)
• Include in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)

python-PyGithub:

• Update to 1.43.5:

python-pytest-asyncio:

• Include in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)
• Initial release of python-pytest-asyncio 0.8.0

python-requests:

• Update in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)

python-websocket-client:

• Update in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)
• Update to version 1.3.2

python-websockets:

• Include in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)
• update to 9.1:

This update for grpc, protobuf, python-Deprecated, python-PyGithub, python-aiocontextvars, python-avro, python-bcrypt, python-cryptography, python-cryptography-vectors, python-google-api-core, python-googleapis-common-protos, python-grpcio-gcp, python-humanfriendly, python-jsondiff, python-knack, python-opencensus, python-opencensus-context, python-opencensus-ext-threading, python-opentelemetry-api, python-psutil, python-pytest-asyncio, python-requests, python-websocket-client, python-websockets fixes the following issues:

grpc:

• Update in SLE-15 (bsc#1197726, bsc#1144068)

protobuf:

• Fix a potential DoS issue in protobuf-cpp and protobuf-python, CVE-2022-1941, bsc#1203681
• Fix a potential DoS issue when parsing with binary data in protobuf-java, CVE-2022-3171, bsc#1204256
• Fix potential Denial of Service in protobuf-java in the parsing procedure for binary data, CVE-2021-22569, bsc#1194530
• Add missing dependency of python subpackages on python-six (bsc#1177127)
• Updated to version 3.9.2 (bsc#1162343)
  • Remove OSReadLittle* due to alignment requirements.
  • Don't use unions and instead use memcpy for the type swaps.
• Disable LTO (bsc#1133277)

python-aiocontextvars:

• Include in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)

python-avro:

• Include in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)
• Update in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)

python-cryptography:

• update to 3.3.2 (bsc#1182066, CVE-2020-36242, bsc#1198331)
  • SECURITY ISSUE: Fixed a bug where certain sequences of update() calls when symmetrically encrypting very large payloads (>2GB) could result in an integer overflow, leading to buffer overflows. CVE-2020-36242

python-cryptography-vectors:

• update to 3.2 (bsc#1178168, CVE-2020-25659):
  • CVE-2020-25659: Attempted to make RSA PKCS#1v1.5 decryption more constant time, to protect against Bleichenbacher vulnerabilities. Due to limitations imposed by our API, we cannot completely mitigate this vulnerability.
  • Support for OpenSSL 1.0.2 has been removed.
  • Added basic support for PKCS7 signing (including SMIME) via PKCS7SignatureBuilder.
• update to 3.3.2 (bsc#1198331)

python-Deprecated:

• Include in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)
• update to 1.2.13:

python-google-api-core:

• Update to 1.14.2

python-googleapis-common-protos:

• Update to 1.6.0

python-grpcio-gcp:

• Initial spec for v0.2.2

python-humanfriendly:

• Update in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)
• Update to 10.0

python-jsondiff:

• Update in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)
• Update to version 1.3.0

python-knack:

• Update in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)
• Update to version 0.9.0

python-opencensus:

• Include in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)
• Disable Python2 build
• Update to 0.8.0

python-opencensus-context:

• Include in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)

python-opencensus-ext-threading:

• Include in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)
• Initial build version 0.1.2

python-opentelemetry-api:

• Include in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)
• Version update to 1.5.0

python-psutil:

• Update in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)
• update to 5.9.1
• remove the dependency on net-tools, since it conflicts with busybox-hostnmame which is default on MicroOS. (bsc#1184753)
• Include in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)

python-PyGithub:

• Update to 1.43.5:

python-pytest-asyncio:

• Include in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)
• Initial release of python-pytest-asyncio 0.8.0

python-requests:

• Update in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)

python-websocket-client:

• Update in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)
• Update to version 1.3.2

python-websockets:

• Include in SLE-15 (bsc#1199282, jsc#PM-3243, jsc#SLE-24629)
• update to 9.1:

It was discovered that Protocol Buffers did not properly validate field com.google.protobuf.UnknownFieldSet in protobuf-java. An attacker could possibly use this issue to perform a denial of service attack. This issue only affected protobuf Ubuntu 22.04 LTS and Ubuntu 22.10. (CVE-2021-22569)

It was discovered that Protocol Buffers did not properly parse certain symbols. An attacker could possibly use this issue to cause a denial of service or other unspecified impact. (CVE-2021-22570)

It was discovered that Protocol Buffers did not properly manage memory when parsing specifically crafted messages. An attacker could possibly use this issue to cause applications using protobuf to crash, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS and Ubuntu 22.10. (CVE-2022-1941)