CVE-2021-327627.5HighCWE-680

CVE-2021-32762: Integer overflow that can lead to heap overflow in redis-cli, redis-sentinel on some platforms

redis

Vendor fix available · Affected: redis · Exploitation: possible (1 to 10%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

2.6%probability of exploitation in the next 30 days

85th percentile

050100

Higher than 85% of scored CVEs

7.5HighCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

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.

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

redis · redis< 5.0.14; >= 6.0.0, < 6.0.16; >= 6.2.0, < 6.2.6

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Possible (1 to 10%). EPSS between 1% and 10%.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Integer Overflow to Buffer Overflow · Memory Corruption
Vendor: redis
Published: October 2021
Band: Possible (1 to 10%), October 2021

CoverageNo articles yet

No CyberSIXT article names CVE-2021-32762 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.