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Echo: openssl: security update to 3.5.5-1~deb13u2

high Tenable Self-Hosted Container Security Plugin ID 462446

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - Issue summary: Applications using RSASVE key encapsulation to establish a secret encryption key can send
 contents of an uninitialized memory buffer to a malicious peer. Impact summary: The uninitialized buffer
 might contain sensitive data from the previous execution of the application process which leads to
 sensitive data leakage to an attacker. RSA_public_encrypt() returns the number of bytes written on success
 and -1 on error. The affected code tests only whether the return value is non-zero. As a result, if RSA
 encryption fails, encapsulation can still return success to the caller, set the output lengths, and leave
 the caller to use the contents of the ciphertext buffer as if a valid KEM ciphertext had been produced. If
 applications use EVP_PKEY_encapsulate() with RSA/RSASVE on an attacker-supplied invalid RSA public key
 without first validating that key, then this may cause stale or uninitialized contents of the caller-
 provided ciphertext buffer to be disclosed to the attacker in place of the KEM ciphertext. As a workaround
 calling EVP_PKEY_public_check() or EVP_PKEY_public_check_quick() before EVP_PKEY_encapsulate() will
 mitigate the issue. The FIPS modules in 3.6, 3.5, 3.4, 3.3, 3.1 and 3.0 are affected by this issue.
 (CVE-2026-31790)

Solution

Update the openssl library and its related packages to version 3.5.5-1~deb13u2 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-31790

Plugin Details

Severity: High

ID: 462446

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 5.7

Percentile: 95.89

CVSS v2

Risk Factor: High

Base Score: 8.3

Temporal Score: 6.1

Vector: CVSS2#AV:N/AC:L/Au:M/C:C/I:C/A:C

CVSS Score Source: CVE-2026-31790

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 4/8/2026

Vulnerability Publication Date: 3/13/2026

Reference Information

CVE: CVE-2026-31790

IAVA: 2026-A-0308-S