CVE-2021-44493
Using crafted input, an attacker can cause a call to $Extract to force an signed integer holding the size of a buffer to take on a large negative number, which is then used as the length of a memcpy call that occurs on the stack, causing a buffer…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.68%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An issue was discovered in YottaDB through r1.32 and V7.0-000 and FIS GT.M through V7.0-000. Using crafted input, an attacker can cause a call to $Extract to force an signed integer holding the size of a buffer to take on a large negative number, which is then used as the length of a memcpy call that occurs on the stack, causing a buffer overflow.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.68% probability · 76th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-120
- Affected
- fisglobal/gt.m · yottadb/yottadb
- Source
- cve@mitre.org
References
- http://tinco.pair.com/bhaskar/gtm/doc/articles/GTM_V7.0-002_Release_Notes.htmlRelease Notes, Third Party Advisory
- https://gitlab.com/YottaDB/DB/YDB/-/issues/828Issue Tracking, Patch, Third Party Advisory
- https://sourceforge.net/projects/fis-gtm/files/Product, Third Party Advisory
- http://tinco.pair.com/bhaskar/gtm/doc/articles/GTM_V7.0-002_Release_Notes.htmlRelease Notes, Third Party Advisory
- https://gitlab.com/YottaDB/DB/YDB/-/issues/828Issue Tracking, Patch, Third Party Advisory
- https://sourceforge.net/projects/fis-gtm/files/Product, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.