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CVE-2021-32762
CVE ID
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CVE-2021-32762
MITRE ATT&CK
Collection
Command and Control
Credential Access
Defense Evasion
Discovery
Execution
Exfiltration
Impact
Initial Access
Lateral Movement
Persistence
Privilege Escalation
Topic Tags
Description
Redis is an open source, in-memory database that persists on disk. The redis-cli command line tool and redis-sentinel service may be vulnerable to integer overflow when parsing specially crafted large multi-bulk network replies. This is a result of a vulnerability in the underlying hiredis library which does not perform an overflow check before calling the calloc() heap allocation function. This issue only impacts systems with heap allocators that do not perform their own overflow checks. Most modern systems do and are therefore not likely to be affected. Furthermore, by default redis-sentinel uses the jemalloc allocator which is also not vulnerable. The problem is fixed in Redis versions 6.2.6, 6.0.16 and 5.0.14.
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CVSS V3 Severity and Metrics
General Information
Vendors
- debian,
- fedoraproject,
- netapp,
- oracle,
- redis
Products
- communications operations monitor 4.3,
- communications operations monitor 4.4,
- communications operations monitor 5.0,
- debian linux 10.0,
- debian linux 11.0,
- fedora 33,
- fedora 34,
- fedora 35,
- management services for element software -,
- management services for netapp hci -,
- redis
References
Advisory
Additional Info
Technical Analysis
Report as Exploited in the Wild
CVE ID
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