CVE-2019-18375: The ASG and ProxySG management consoles are susceptible to a session hijacking vulnerability

This month

MEDIUM 6.5REMOTEUPGRADEUPGRADE

CVE-2019-18375 is a medium-severity flaw (CVSS 6.5) affecting advanced secure gateway, symantec proxysg. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The ASG and ProxySG management consoles are susceptible to a session hijacking vulnerability. A remote attacker, with access to the appliance management interface, can hijack the session of a currently logged-in user and access the management console.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Published	2020-04-10
Last modified	2026-06-17

Publisher (CNA): Symantec Corporation · Vendor: broadcom

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-04-10 00:15 UTCPublished CVE record published
2026-06-17 02:24 UTCUpdated Record last modified

broadcom advanced secure gateway UPGRADE

Affected: >= 6.7.4 and < 6.7.4.10 · >= 7.1 and < 7.2.0.1

Fixed in: 6.7.4.10, 7.2.0.1

Safe to downgrade to: a release before 6.7.4

1. Check installed version

apt-cache policy advanced-secure-gateway || rpm -q advanced-secure-gateway || advanced-secure-gateway --version

2. UPGRADE to 6.7.4.10 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade advanced-secure-gateway

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade advanced-secure-gateway

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 6.7.4 (Debian / Ubuntu)

apt-cache madison advanced-secure-gateway sudo apt install advanced-secure-gateway=<VERSION_BEFORE_6.7.4> sudo apt-mark hold advanced-secure-gateway

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list advanced-secure-gateway sudo dnf downgrade advanced-secure-gateway-<VERSION_BEFORE_6.7.4> sudo dnf versionlock add advanced-secure-gateway

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

broadcom symantec proxysg UPGRADE

Affected: >= 6.7.4 and < 6.7.4.10 · >= 7.1 and < 7.2.0.1

Fixed in: 6.7.4.10, 7.2.0.1

Safe to downgrade to: a release before 6.7.4

1. Check installed version

apt-cache policy symantec-proxysg || rpm -q symantec-proxysg || symantec-proxysg --version

2. UPGRADE to 6.7.4.10 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade symantec-proxysg

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade symantec-proxysg

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 6.7.4 (Debian / Ubuntu)

apt-cache madison symantec-proxysg sudo apt install symantec-proxysg=<VERSION_BEFORE_6.7.4> sudo apt-mark hold symantec-proxysg

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list symantec-proxysg sudo dnf downgrade symantec-proxysg-<VERSION_BEFORE_6.7.4> sudo dnf versionlock add symantec-proxysg

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2019-18375?

advanced secure gateway: upgrade to 6.7.4.10, 7.2.0.1; symantec proxysg: upgrade to 6.7.4.10, 7.2.0.1. Exact commands for each OS are on this page.

Is CVE-2019-18375 being exploited?

CVE-2019-18375 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2019-18375 affect?

CVE-2019-18375 affects advanced secure gateway, symantec proxysg. Severity is medium (CVSS 6.5). The ASG and ProxySG management consoles are susceptible to a session hijacking vulnerability. A remote attacker, with access to the appliance management interface, can hijack the session of a currently logged-in user and access the manageme

How urgent is CVE-2019-18375?

Priority 45/100. Remotely exploitable, no login, no user action

Software pages

Symantec and Broadcom vulnerabilities

Related CVEs

CVE-2023-23955 HIGH 8.1 UPGRADE UPGRADE Advanced Secure Gateway and Content Analysis, prior to 7.3.13.1 / 3.1.6.0, may be susceptible to a Server-Side
CVE-2023-23954 MEDIUM 5.4 UPGRADE UPGRADE Advanced Secure Gateway and Content Analysis, prior to 7.3.13.1 / 3.1.6.0, may be susceptible to a Stored Cros
CVE-2023-23953 HIGH 7.8 UPGRADE UPGRADE Advanced Secure Gateway and Content Analysis, prior to 7.3.13.1 / 3.1.6.0, may be susceptible to an Elevation
CVE-2023-23952 CRITICAL 9.8 UPGRADE UPGRADE Advanced Secure Gateway and Content Analysis, prior to 7.3.13.1 / 3.1.6.0, may be susceptible to a Command Inj
CVE-2021-46825 CRITICAL 9.1 DOWNGRADE DOWNGRADE Symantec Advanced Secure Gateway (ASG) and ProxySG are susceptible to an HTTP desync vulnerability

References

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