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Recently, there has been a lot of talk about vu白個很東lnerability scanning. InsightSec has alw路笑樂購ays believed that vulnerability scanning is 內門裡一a common practice in the industry, but it慢房區體 turns out that many people are not familiar慢線筆山 with the principles behind i很哥樂我t and its impact. Let's take a look at it t樹那女吧ogether.
What is vulnerability scanning?
Vulnerability scanning is a common method used in綠嗎很藍 information security to assess商銀草雜 risks. Just like how a doctor uses a地事美不n X-ray to examine a patient's body for any iss冷科去關ues, security professionals often use vulner數輛唱國ability scanning to assess whether a t書吧拿白arget system has any v樂美北路ulnerabilities and determine地理務要 the next steps for security protection.
What is the principle behind vulnerability sc器下業大anning?
Specific requests are sent to remote serv房錢錯對ices, and based on the behavior of t短從姐吧he remote services' responses, it is 筆暗制日determined whether a specific vulnerab報自做視ility exists (sometimes based o白技子自n version information returned)玩唱不到.
What is the impact of vulnerability scanning動生就訊?
3.1 Network impact
The frequency and quantity子火著刀 of network packet requests 跳來舞用can have an impact on the networ西農鄉一k and applications. It may cause swi懂黑業人tches/routers to crash, leading to a chain reac拍體道草tion. Excessive queries per second (QPS) m姐個影看ay exceed the performance limits我林錯工 of services, resulting in service interruptions.匠睡雜上
3.2 Impact on abnormal handling
The business may fail to handle 業煙美黑special inputs correctly, leading音見體秒 to abnormal crashes. For example, a service u子街雪工sing a proprietary protocol may coinciden服員業靜tally be listening on TCP port 80 a腦看畫學nd crash when receiving an HTTP Get requ媽請訊到est.
3.3 Impact on logs
When probing publicly accessible services,計南他業 each URL probe may result in 西司美用a 40x or 50x error log. Normal monitoring lo友明習刀gic relies on status codes in the access l愛問店西ogs. Without proper handling, a sudden increase 好下船門in 40x errors will require a resp時這到黃onse from the business's Site Relia森白我微bility Engineering (SRE) and developers. If they 家內了頻frantically log in to the VPN in the middle o兒用山匠f the night or during a holiday onl小唱公高y to discover that it was trigge大鐘她化red by a security en你輛個機gineer, and it even leads to the impacts mentione行去兒快d in 3.1 and 3.2, the responsibi議文草窗lity will undoubtedly 妹見請時fall on the security en舊房外自gineer.
Only with a thorough understandi通又外快ng can we effectively grasp and家嗎為明 operate. Shanghai Insi機到頻火ghtSec Network Technology Co., L聽哥務少td. is a technology service company specializing吧都很刀 in providing information s快城藍師ecurity solutions for enterprises. Foll鐵購頻了ow us to learn more about information security說輛愛著 knowledge.
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