Redis is an open source (BSD licensed), in-memory data structure store, used as a database, cache, and message broker. An integer overflow bug in Redis version 6.0 or newer, could be exploited using the STRALGO LCS command to corrupt the heap and potentially result with remote code execution. This is a result of an incomplete fix by CVE-2021-29477. The problem is fixed in version 6.2.4 and 6.0.14. An additional workaround to mitigate the problem without patching the redis-server executable is to use ACL configuration to prevent clients from using the STRALGO LCS command. On 64 bit systems which have the fixes of CVE-2021-29477 (6.2.3 or 6.0.13), it is sufficient to make sure that the proto-max-bulk-len config parameter is smaller than 2GB (default is 512MB).

An update of the redis package has been released.

The version of redis installed on the remote host is prior to 6.2.4-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2REDIS6-2023-008 advisory.

    Redis is an open source (BSD licensed), in-memory data structure store, used as a database, cache, and     message broker. An integer overflow bug in Redis version 6.0 or newer could be exploited using the     `STRALGO LCS` command to corrupt the heap and potentially result with remote code execution. The problem     is fixed in version 6.2.3 and 6.0.13. An additional workaround to mitigate the problem without patching     the redis-server executable is to use ACL configuration to prevent clients from using the `STRALGO LCS`     command. (CVE-2021-29477)

    Redis is an open source (BSD licensed), in-memory data structure store, used as a database, cache, and     message broker. An integer overflow bug in Redis version 6.0 or newer, could be exploited using the     STRALGO LCS command to corrupt the heap and potentially result with remote code execution. This is a     result of an incomplete fix by CVE-2021-29477. The problem is fixed in version 6.2.4 and 6.0.14. An     additional workaround to mitigate the problem without patching the redis-server executable is to use ACL     configuration to prevent clients from using the STRALGO LCS command. On 64 bit systems which have the     fixes of CVE-2021-29477 (6.2.3 or 6.0.13), it is sufficient to make sure that the proto-max-bulk-len     config parameter is smaller than 2GB (default is 512MB). (CVE-2021-32625)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SUSE15 host has a package installed that is affected by a vulnerability as referenced in the openSUSE-SU-2021:2294-1 advisory.

  - Redis is an open source (BSD licensed), in-memory data structure store, used as a database, cache, and     message broker. An integer overflow bug in Redis version 6.0 or newer (on 32-bit systems ONLY) can be     exploited using the `STRALGO LCS` command to corrupt the heap and potentially result with remote code     execution. This is a result of an incomplete fix for CVE-2021-29477 which only addresses the problem on     64-bit systems but fails to do that for 32-bit. 64-bit systems are not affected. The problem is fixed in     version 6.2.4 and 6.0.14. An additional workaround to mitigate the problem without patching the `redis-     server` executable is to use ACL configuration to prevent clients from using the `STRALGO LCS` command.
    (CVE-2021-32625)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 host has a package installed that is affected by a vulnerability as referenced in the SUSE- SU-2021:2294-1 advisory.

  - Redis is an open source (BSD licensed), in-memory data structure store, used as a database, cache, and     message broker. An integer overflow bug in Redis version 6.0 or newer, could be exploited using the     STRALGO LCS command to corrupt the heap and potentially result with remote code execution. This is a     result of an incomplete fix by CVE-2021-29477. The problem is fixed in version 6.2.4 and 6.0.14. An     additional workaround to mitigate the problem without patching the redis-server executable is to use ACL     configuration to prevent clients from using the STRALGO LCS command. On 64 bit systems which have the     fixes of CVE-2021-29477 (6.2.3 or 6.0.13), it is sufficient to make sure that the proto-max-bulk-len     config parameter is smaller than 2GB (default is 512MB). (CVE-2021-32625)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

This update for redis fixes the following issues :

redis was updated to 6.0.14 :

  - CVE-2021-32625: An integer overflow bug could be     exploited by using the STRALGO LCS command to cause     remote remote code execution (boo#1186722)

  - Fix crash in UNLINK on a stream key with deleted     consumer groups

  - SINTERSTORE: Add missing keyspace del event when none of     the sources exist

Redis development team reports :

An integer overflow bug in Redis version 6.0 or newer can be exploited using the STRALGO LCS command to corrupt the heap and potentially result with remote code execution. This is a result of an incomplete fix by CVE-2021-29477.

ID	Name	Product	Family	Severity
203622	Photon OS 4.0: Redis PHSA-2021-4.0-0050	Nessus	PhotonOS Local Security Checks	high
181948	Amazon Linux 2 : redis (ALASREDIS6-2023-008)	Nessus	Amazon Linux Local Security Checks	high
151733	openSUSE 15 Security Update : redis (openSUSE-SU-2021:2294-1)	Nessus	SuSE Local Security Checks	high
151523	SUSE SLES15 Security Update : redis (SUSE-SU-2021:2294-1)	Nessus	SuSE Local Security Checks	high
150304	openSUSE Security Update : redis (openSUSE-2021-841)	Nessus	SuSE Local Security Checks	high
150172	FreeBSD : redis -- integer overflow (8eb69cd0-c2ec-11eb-b6e7-8c164567ca3c)	Nessus	FreeBSD Local Security Checks	high

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CVE-2021-32625

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Tenable Plugins

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