VulnerabilityModified
CVE-2020-3924
Attackers can inject a specific command into a patch file and gain access to the system.
CRITICAL 9.8EPSS 1.26%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.26%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
DVR firmware in TAT-76 and TAT-77 series of products, provided by TONNET do not properly verify patch files. Attackers can inject a specific command into a patch file and gain access to the system.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.26% probability · 68th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-77
- Affected
- tonnet/tat-77104g1 firmware · tonnet/tat-70432n firmware · tonnet/tat-71416g1 firmware · tonnet/tat-71832g1 firmware · tonnet/tat-76104g3 firmware · tonnet/tat-76108g3 firmware · tonnet/tat-76116g3 firmware · tonnet/tat-76132g3 firmware
- Source
- twcert@cert.org.tw
References
- https://tvn.twcert.org.tw/taiwanvn/TVN-201910004Third Party Advisory
- https://www.chtsecurity.com/news/4ef5eb3a-fdc3-4d78-8dd7-ec7213e2bbcfThird Party Advisory
- https://tvn.twcert.org.tw/taiwanvn/TVN-201910004Third Party Advisory
- https://www.chtsecurity.com/news/4ef5eb3a-fdc3-4d78-8dd7-ec7213e2bbcfThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.