CVE-2021-31352 SRC Series: NETCONF over SSH allows negotiation of weak ciphers

Medium 5.3 Published Updated

Remote attackers can exploit weak NETCONF over SSH ciphers on Juniper SRC devices to obtain sensitive information.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2021-31352?

CVE-2021-31352 is a medium-severity vulnerability in Juniper Networks SRC Series, published on 19 Oct 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An Information Exposure vulnerability in Juniper Networks SRC Series devices configured for NETCONF over SSH permits the negotiation of weak ciphers, which could allow a remote attacker to obtain sensitive information. A remote attacker with read and write access to network data could exploit this vulnerability to display plaintext bits from a block of ciphertext and obtain sensitive information. This issue affects all Juniper Networks SRC Series versions prior to 4.13.0-R6.

Weakness: CWE-327, CWE-200

Which versions are affected by CVE-2021-31352?

It affects 1 product.

Products include Juniper Session and Resource Control.

How do I fix CVE-2021-31352?

No fix has been published for CVE-2021-31352 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-31352 being exploited?

There is no known exploitation of CVE-2021-31352 in the wild and no public exploit code.

Sources

Also known as GHSA-pq3v-r83j-pgg5.

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