# [Critical] Photon OS Security Update   
## Summary   
Advisory ID : PHSA-2021-2.0-0349    
Type : Security   
Severity : ['Critical', 'Important', 'Moderate']    
Issued on : 2021-05-28   
Affected Versions : Photon OS 2.0    
   
## Details   
An update of {'gnutls', 'curl', 'dhcp', 'nginx'} packages of Photon OS has been released.   
   
## Affected Packages:    
### Critical    
gnutls - ['[CVE-2021-20232](https://nvd.nist.gov/vuln/detail/CVE-2021-20232)']    
### Important    
curl - ['[CVE-2021-22901](https://nvd.nist.gov/vuln/detail/CVE-2021-22901)']    
nginx - ['[CVE-2021-23017](https://nvd.nist.gov/vuln/detail/CVE-2021-23017)']    
### Moderate    
curl - ['[CVE-2021-22898](https://nvd.nist.gov/vuln/detail/CVE-2021-22898)']   
dhcp - ['[CVE-2021-25217](https://nvd.nist.gov/vuln/detail/CVE-2021-25217)']   
   
## Solution     
Update the affected packages (tdnf update _package_)     
## Updated Packages Information    
curl-7.75.0-2.ph2.x86_64.rpm , sha256 : a20e6a374f220cfaa312675ff214592fb8fc017edae9a20f716a528a8f0a3690 , size : 196K , build_date : Thu, 27 May 2021 09:44:56 PDT    
curl-devel-7.75.0-2.ph2.x86_64.rpm , sha256 : b9f070de8162dfce3b9401f50adbc1b7bba8b55aa20a219d799c251742fe4251 , size : 747K , build_date : Thu, 27 May 2021 09:44:56 PDT    
curl-libs-7.75.0-2.ph2.x86_64.rpm , sha256 : bac8b152b0fd7bb94d6da497ea805f264965144f0449f3336a5a1a1b6ead8809 , size : 292K , build_date : Thu, 27 May 2021 09:44:56 PDT    
dhcp-client-4.3.5-7.ph2.x86_64.rpm , sha256 : f62b9a0448c693c10c38c4a4caa251dfc998bccc3785d9144ccd1dc3d87f43e7 , size : 905K , build_date : Thu, 27 May 2021 09:51:07 PDT    
dhcp-devel-4.3.5-7.ph2.x86_64.rpm , sha256 : ee5e1e5af66a0d81f2914cf35d814cee63d526e847cc86a2a071633690240945 , size : 22K , build_date : Thu, 27 May 2021 09:51:07 PDT    
dhcp-libs-4.3.5-7.ph2.x86_64.rpm , sha256 : e4d730454ad6dc5100a5ded74cc12324d0f04183f9b24c8df068f7717fb05c4f , size : 68K , build_date : Thu, 27 May 2021 09:51:07 PDT    
dhcp-server-4.3.5-7.ph2.x86_64.rpm , sha256 : fc3740ab534a005a18e7d25a33c5859147260bffcc96f918895bc2391a905fe0 , size : 2.7M , build_date : Thu, 27 May 2021 09:51:07 PDT    
gnutls-3.6.15-3.ph2.x86_64.rpm , sha256 : 1af1ad70632e0ce586ce1572847a17cbc43307267714cb96b45f15285a417fc0 , size : 1.5M , build_date : Thu, 27 May 2021 10:02:17 PDT    
gnutls-devel-3.6.15-3.ph2.x86_64.rpm , sha256 : 5af2da28bc7fc6e5b1273ea230ac2fa3e7b337b7b0a96cc42d79e8a1c5bf51b0 , size : 1.2M , build_date : Thu, 27 May 2021 10:02:17 PDT    
nginx-1.16.1-3.ph2.x86_64.rpm , sha256 : 0c62de719e7cc0f93143f10de48e382780e6638a5138ebdde196d73cd7424007 , size : 615K , build_date : Thu, 27 May 2021 09:44:02 PDT