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CVE-2019-19906 · cross-distro fix matrix

CVE-2019-19906: cyrus-sasl (aka Cyrus SASL) 2.1.27 has an out-of-bounds write leading to unauthenticated remote denial-of-service in OpenLDAP via a malformed LDAP packet. The OpenLDAP crash is ultimately caused by an off-by-one error in _sasl_add_string in common.c in cyrus-sasl.

Affects 8 Linux releases across 8 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2019-19906 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

  • cyrus-sasl2→ fixed in2.1.27+dfsg-2urgency: not yet assigned
    sudo apt-get install --only-upgrade -y cyrus-sasl2

Debian bookworm

Source: Debian Security Tracker

  • cyrus-sasl2→ fixed in2.1.27+dfsg-2urgency: not yet assigned
    sudo apt-get install --only-upgrade -y cyrus-sasl2

Debian trixie

Source: Debian Security Tracker

  • cyrus-sasl2→ fixed in2.1.27+dfsg-2urgency: not yet assigned
    sudo apt-get install --only-upgrade -y cyrus-sasl2

Alpine v3.20

Source: Alpine secdb

  • cyrus-sasl→ fixed in2.1.27-r5
    apk update && apk add --upgrade cyrus-sasl

Alpine v3.21

Source: Alpine secdb

  • cyrus-sasl→ fixed in2.1.27-r5
    apk update && apk add --upgrade cyrus-sasl

Alpine edge

Source: Alpine secdb

  • cyrus-sasl→ fixed in2.1.27-r5
    apk update && apk add --upgrade cyrus-sasl

Alpine v3.18

Source: Alpine secdb

  • cyrus-sasl→ fixed in2.1.27-r5
    apk update && apk add --upgrade cyrus-sasl

Alpine v3.19

Source: Alpine secdb

  • cyrus-sasl→ fixed in2.1.27-r5
    apk update && apk add --upgrade cyrus-sasl
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